Cummins' Duesenberg diesel race car made history at the 1931 Indy 500, completing the 500-mile race without refueling and using just $1.40 worth of furnace oil.

Cummins' Duesenberg diesel race car made history at the 1931 Indy 500, completing the 500-mile race without refueling and using just $1.40 worth of furnace oil.
