The very first Mazda with a Wankel rotary engine went on sale in 1967, but the Japanese automaker hasn’t stopped talking about the design since. Sure, it has made some great cars, like the RX-7, with one of the engines, but hasn’t it finally given up on making the spinning Dorito happen? It has not. CarBuzz has just found a new patent from the company for emissions tech that shows the rotary is still on the minds of engineers.
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