Both 787Bs were powered by 2.6-liter four-rotor engines that were detuned to 700 horsepower. Afterward, the FIA announced that rotary engines would no longer be allowed at Le Mans.

Mark it down, auto enthusiasts.Mazda built its last rotary engine on ... of the high-revving engine has seen a few stutters since Mazda put the first dual-rotor Wankel in a production car in ...