Mazda files patent for hybrid rotary engine (Update)
Rotary engines that once powered the gorgeous Mazda RX-7 two-seater, rear-wheel drive coupe—a five-time winner of a coveted spot on Car and Driver’s Ten Best autos list—were phased out by 2012. Their popularity in the Seventies and Eighties was boosted by their compact design and low weight, but they lost>>>


