The 40-MPG diesel-powered Auburns of Clessie Cummins

If nobody else, Clessie Cummins had proved to Americans the viability of the diesel engine. Familiar with the Indianapolis 500 since crewing for Ray Harroun in the first such race in 1911, he returned in 1931 with a Duesenberg-built, diesel-powered race car that finished 13th, but managed to not only run the entire race without […]