Hot Wheels Price: Not available Mazda’s RX-Vision is a rear-wheel drive concept powered by the next-generation SkyActiv-R rotary engine that operates through the rotational motion of triangular rotors—as opposed to reciprocating pistons in regular engines. Mazda is the only company to successfully mass-produce cars with a rotary engine and almost all of them are icons. Mazda is also the only manufacturer to win the 24 Hours of Le Mans with a rotary-powered race car. lamborghini.com