Although most people only came to know about the rotary engine in the 1970s, Felix Wankel, who developed it, had received a patent in Germany as far back as 1929 and produced a working prototype at NSU (which would later become part of Audi) in 1957. The rotary engine was uniquely different from the reciprocating … Continue reading FEATURE – When Mercedes-Benz also had a rotary-engined sportscar