The Mazda RX7! Mazda has long been a proponent of the Wankel rotary engine design used in the RX7 and its kin, but this was the first car to achieve mainstream success, a reliable track record, and popular following, paving the way for the modern and much-loved RX8. The Wankel engine featured in this vehicle is brilliant because it has so few moving parts and takes up so little space. It’s power-to-fuel-economy ratio is strong, its form factor is tiny, and it’s big on fun, making it a clever implementation of an even cleverer design. This car is certainly to Mazda’s credit.