This car was one of Frank Kurtis's first race car designs, his roadsters would be the dominant force at the 500 along with Watson designs.

Other noteable Cummin's entrants:

1931 Cummins Diesel Special, went the entire 500 miles without a pit stop

1952 Cummins Diesel Special; first Indycar with a Turbo charger, first car to do a 138mph four lap average, first 139mph single lap average, one of the original "Roadsters."

1987 Cummins-Horset Penske Cosworth, the car Al Unser Senior won his 4th Indy 500 in. Not powerd by a diesel just sponsored by it.