Why Bosn sees big things on the horizon for Cadillac Racing

With more than 600 days in the role, Cadillac Racing sportscar boss Keely Bosn is now fully settled into a demanding position that sees her oversee the brand’s dual V-Series.R programs across IMSA and the WEC, while also managing General Motors’ relationships with its three factory teams: JOTA, Action Express Racing and Wayne Taylor Racing.

No two days are the same, and few months pass without a major event, meeting or milestone. And as the 2026 season enters its decisive phase, there are plenty of reasons for Bosn to feel encouraged about the direction of Cadillac’s sportscar program.

Since she joined Cadillac, results have been mixed, but the picture is increasingly positive. Action Express’ IMSA title challenge, despite its recent setback at Elkhart Lake, is in full swing and will be a major focus in the weeks ahead. In the WEC, JOTA appears well-placed to secure a second Hypercar victory before the end of the season, while Wayne Taylor Racing is looking more like its old self after an encouraging return to Le Mans in June and its victory at Road America earlier this month.

In 2025, there were no championships to celebrate and several near-misses in both series, but the fan-favorite, V8-powered LMDh prototype still delivered a number of standout performances. Action Express won the IMSA Endurance Cup races at Indianapolis and Road Atlanta late in the season, JOTA secured Cadillac’s first Hypercar victory in the WEC at Sao Paulo, and the British team locked out the front row at Le Mans during its first appearance at the race as a two-car factory operation.

Cadillac's major focus heading into 2026 was introducing its EVO ‘Jokers’ for the car, with changes aimed primarily at improving aerodynamic and braking performance. The key questions ahead of the Rolex 24 at Daytona were whether those updates would make the V-Series.R more consistent over race stints, more nimble in traffic and more effective in dirty air.

With 11 races now in the books, Bosn believes the updates have delivered on those objectives and positioned the program well for the remainder of this season and beyond.

“I’m pretty confident,” she says of the car’s potential going forward. “I think the cars are looking strong coming out of Le Mans. We saw we had the pace, we had a potential win there, or a potential podium. And I think we’ve seen just the strength overall of the JOTA organization. So on the WEC side, we’re hoping for a second win soon.

“We developed the aero EVO over the past year or so. We hit the ground running; we showed some pace in IMSA, at Imola and Spa, and then going into Le Mans, especially, we were looking to optimize the performance package that we’ve been working so hard on for the aero side of it. I think that really showed at Le Mans, because we saw that added performance this year over last.”

That does not mean the development work is finished. Cadillac still has ambitions of winning Le Mans before the V-Series.R reaches the end of its competitive life, as well as securing a World Championship and adding more major victories in IMSA. Achieving those goals could require further updates in future seasons as the series moves toward its next ruleset in 2030.

“We’re always looking to optimize, looking for those tiny performance and drivability gains in all areas of the car,” Bosn says when asked about future plans for the V-Series.R. “From a development standpoint, we have some of the most proficient engineers we can, who are always looking to find those gains. So we’ll just keep doing that and keep working with our suppliers and keep working on the car.”

Cadillac claimed its first WEC win in Brazil, and Bosn is keen to add to the tally. James Moy/GettyImages

Asked whether there are specific areas Cadillac intends to target with future EVO ‘Jokers,’ Bosn keeps her cards close to her chest.

“We want to improve everything!” she laughs.

The size and shape of Cadillac Racing’s program beyond 2026 will also require some major discussions and decisions between Bosn and General Motors’ senior leadership. Action Express Racing is central to that conversation.

Since the program debuted in 2023, the Gary Nelson-led team has secured major Endurance Cup victories at Sebring, Watkins Glen, Indianapolis and Petit Le Mans. It has also won championships, and the team looks set to add to its already substantial trophy haul at the end of this season. The No. 31 crew, led by Jack Aitken, currently leads the standings with two rounds remaining.

That will inevitably fuel speculation during the off-season about whether Action Express will field a second car in 2027. The team has consistently competed at the sharp end for the past two seasons, and was believed to have come close to expanding its effort when Cadillac Racing and Chip Ganassi Racing ended their partnership at the close of 2024. Ultimately, Cadillac opted for a three-car operation, with two cars assigned to Wayne Taylor Racing.

Action Express boss Gary Nelson admitted to RACER at Road America this year that, unsurprisingly, he wouldn’t turn down the opportunity to add a second car.

“We actually feel like a five-car team across Action Express, WTR and JOTA, but if they asked us to do two cars, I would say ‘yeah, we’ll bring in more people to do more work.’ We’re here for Cadillac to win; ideally, we’re the ones to win, but we’re here for Cadillac to win races.”

So could that change for 2027? Adding a fourth Cadillac to the IMSA GTP field would certainly provide a major boost, particularly with Acura set to leave the grid at the end of the current campaign and McLaren, Genesis and Ford still considering entries.

“I think it’s always a negotiation across the teams and the manufacturer of what the goals are,” Bosn explains when asked whether it is time to expand Action Express’ program. “I can’t comment on whether we would expand the current program that we have, but I think AXR has blown everyone out of the water with their performance. They have a secret to finding some exceptional drivers and creating a culture that really benefits everybody that’s around them. They’re a strong team, and I’d like to see them keep doing what they’re doing.”

On the other side of the Cadillac Racing GTP operation, Bosn has also been encouraged by Wayne Taylor Racing’s progress in closing the gap to the Whelen-liveried car this year, culminating in its first victory with the V-Series.R.

The No.31 has anchored Cadillac's IMSA program this year, and leads the championship with two races to go. Brandon Badraoui/IMSA

“We’ve now won six out of the last 10 races (dating back to Indianapolis last year),” Bosn reflects. “We were fast last year at Sebring, then from Detroit on; it just took until Indy to win. This year, I think we’re starting to really see those results in IMSA. Our goal at the beginning of the season was to make all three cars equal in performance as much as possible, because we really struggled to get everybody up to speed with a whole new team coming in, and I think we’ve really seen that work begin to pay off this season, which is promising.

“I think WTR put in all the hard work that they need to find the pace and get the car set up properly for the drivers. Their drivers now know the car. And a learning curve is always something that occurs. So I think we’re finally in a position that between WTR and AXR we’re going to be competitive with each other. We saw that at Watkins Glen, right? And of course, Road America!

"I think the teams are starting to come together and show a partnership and competitiveness as one. And it’s exciting that Wayne Taylor’s car was on pace at Le Mans. The result didn’t reflect it, but that performance was pretty stellar.”

Looking beyond the headline race results of the past 12 months, Bosn also takes pride in the Cadillac LMDh program’s achievements away from the track, particularly its sustainability awards in both the WEC and IMSA.

At Le Mans, she accepted a DHL Sustainability Award on behalf of Cadillac and General Motors – an award that proved somewhat difficult to carry onto her flight home as a personal item. She also helped secure a similar accolade at Watkins Glen and Road America for the IMSA side of the program, presented by tire supplier Michelin.

Such initiatives can be easy to overlook, but for a manufacturer such as Cadillac and a parent company such as General Motors, these awards have become increasingly important. They help demonstrate the value of a racing program at the corporate level while also showcasing a brand’s approach to a more environmentally conscious future.

“I can tell you on a personal level, it’s extremely important to me,” Bosn says. “In addition to a business degree, I have a masters in sustainability, so I really wanted to bring that background and passion to this role. I take it seriously. We’re already looking toward the Le Mans Sustainability Award for next year, and working on what we can start to do now to remain a contender.

“We put a lot of effort last year into understanding where we ranked and what different areas we could improve upon. We set our baseline, then worked to identify measurable successes we could show the organization.

“We did a lot of work on the community and social side. We partnered with a local school in Le Mans and asked all the children to draw what they thought a sustainable race car would look like on the track, and displayed those over in our fan zone areas. That was one way that we helped involve the younger generation and try to show a level of STEM engagement.

“We also switched out logistics from the U.S. over to France with the WTR team, and shipped all of their equipment over. We looked at sea freight over air freight, as it’s much more sustainable. Then we went all the way down to what’s on the menu for catering and had no single-use plastics within our facility. On top of that, we installed water stations in two different locations around the track too, for fans and track staff to use.

In addition to the work that has gone into making Cadillacs faster on the track, Bosn also takes pride on the leaps the operation has taken in promoting sustainability. Image via Cadillac Racing

“These goals sit within the Cadillac organization within GM. Sustainability is definitely a topic at GM as we look to balance EV and ICE vehicles around the globe. So winning that award both at Le Mans and showing that we could also do it on the IMSA side, which is a little bit different criteria, was a huge milestone.

“In IMSA, with Michelin (the award accepted by Kristian Aquilina, the VP of Global Cadillac), they’re measuring tire and energy use, and then they’re also looking at how you balance that for your overall performance and your competitiveness on the track. Essentially, it’s testing a manufacturer’s ability to be fast but also efficient. We’ve shown that we can do this.”

On the road to 2030 and the shift to a single platform for Hypercar and GTP, the cost, relevance and return on investment of sportscar racing for a brand like Cadillac will once again come under scrutiny. Bosn’s primary task will be to set out her vision and justify the program, ensuring it remains part of GM’s plans as the company also establishes an F1 program and prepares for the next IndyCar ruleset.

Following the ACO’s pre-Le Mans conference, where it presented the framework for the next ruleset, which will see Hypercar and GTP move to a single platform, with a rear-axle-driven hybrid configuration that, on the face of it, leans closer to the current LMDh technical regulations, Bosn remains upbeat.

“I think I have the same level of positivity as I did before the conference,” she says. “I previously said that we were looking for it to converge into one single platform, so I was excited to see that that truly was the case. I think that lends us some flexibility in different areas.

“As the working groups continue to occur over the next few months, we’ll start to really dial down and understand what that impact will be on the manufacturer side. But overall the regulations are what we expected them to be as far as an outline, and the overall goal is still to keep costs down, which is good.

“I am very hopeful that that continues to be the focus, and we, within Cadillac, are starting to try to lay out our plan while also navigating the working groups. The hope is by the end of the year we have a solid framework, so we can really start to work on development and get that ball rolling next year, so that we’re not behind.

“We’re evaluating it now, right? Until the end of the season this year and probably into early Q1, Q2 of next year, we’ll be fully laying out the plan, and that takes a lot of players involved between engineering suppliers trying to understand what it is that GM wants to accomplish and how we take what we have today, and all the lessons learned.

“We pulled this car together very quickly; now we have a little bit more benefit of time. We can say: ‘If we were to build it from the ground up, what does this look like?’ So I’m excited that we have a little bit more time. But time is ticking away, and so we need to get moving on it.”

As for whether Cadillac will maintain its two-pronged IMSA and WEC approach, Bosn is bullish there, too. In the wake of Lamborghini’s departure after 2025 and Acura’s decision to ‘pause’ its program from 2026, she believes IMSA GTP will remain competitive and as important as ever to GM in terms of visibility.

“I personally don’t have any concerns,” she says of GTP’s future. “I think it’s a time of change, right? The manufacturers that we’ve seen joining WEC and/or, you know, leaving, that it’s all just part of everyone’s bigger marketing plan.

“We’ll see how the series changes in the next few years, but overall, I’d say the strength of both is very strong. We’ve seen that in viewership and participation from the fans, and I think that both will continue to stay strong into the future.

“We took a big step in expanding by having the three teams and the five cars over this past couple of years. The hope now is to continue doing what we’re doing and to make sure that we’re always focused on raising the bar of performance.”