The coupe features a new tub and wider driver greenhouse, complying with new 2014 LMP1 regulations, and will make its racing debut in the American Le Mans Series this year, potentially as early as the Mazda Raceway Laguna Seca in May.The reason for the closed canopy is ultimately safety. It protects the driver's head from flying debris and rollovers, while in the coupe the driver will also sit in the middle of the cockpit, rather than on the left or right hand side, offering better protection and visibility. With Nissan gone, the 1.6-liter unit has been replaced with a new 2.0-liter turbocharged aluminum block by Elan Motorsports Technologies.