Report: Mazda Needs "Breakthrough" Before it Can Offer Rotary Engine

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Team of 50 still working to meet performance targets.Although it was well-received, the Mazda RX-Vision sports car concept that debuted at the 2015 Tokyo motor show hasn't been green-lit for production, Automotive News reports. A team of 50 Mazda engineers have worked tirelessly for the past eight years to find the breakthrough needed to overcome the inherent shortcomings of the rotary engine. That breakthrough, however, has proven elusive.