Josef Newgarden took the honors in the final session of IndyCar's two-day Open Test at Indianapolis Motor Speedway.

RACER's Marshall Pruett and four-time Champ Car champion Sebastien Bourdais wrap their Phoenix IndyCar test coverage with a look at how Friday night's running posed serious challenges, the gains made Saturday afternoon, and whether Chevy or Honda have found a power advantage that can be seen in the lap speeds...

Watch raw footage and listen to more than 50 cars test at IMSA's Roar Before the 24 event at Daytona International Speedway.

Highlights of Saturday's test sessions at Phoenix International Raceway.

Formula 1 is set to run a 12-hour one-day test following the Abu Dhabi Grand Prix after the plan was backed by teams at a meeting of the sporting directors.Pirelli has long been keen to finalize the details of the test, which will take place on Tuesday, Dec. 1, to...

Romain Grosjean is confident that Lotus has the infrastructure it needs to make the most of its move to Mercedes Formula 1 power this season.After a difficult 2014 campaign, blighted by problems with Renault, Lotus has switched to the benchmark power unit in a bid to move forward. Although Lotus's...