Mazda has big plans for the future of its rotary engine. According to GoAuto, the company is currently hard at work on improving the powerplant's fuel economy by a full 50 percent. If it can pull it off, the new mill will proudly wear the same "Sky" designation as its traditional four-cylinder counterparts. The site quotes Seita Kanai, Mazda's director of R&D and program management, as saying that upping the rotary's fuel economy is essential for the engine's survival.
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