This week. we get some superb advice from Marcus Shen, the chief engineer for SpeedSource, Mazda’s factory Prototype team. He tells how he “stumbled across” motorsports and hasn’t looked back since. As we prepare to celebrate another Fourth of July weekend and commemorate the historic beginning of our great nation,...

When the Mazda Motorsports Prototype race team recently tested in preparation for the 2015 Rolex 24 at Daytona, it invited some special guests: students from the University of Florida's mechanical engineering department. The Mazda racing program is operated by SpeedSource, a race team based in Coral Springs, Fla. The team's...