Career
In the 1912 Indianapolis 500 he served as a relief driver for Joe Dawson from lap 108 to 144. Afterwards, Dawson returned to the car and drove on to victory. Herr drove his own car in the 1913 Indianapolis 500 and started fifth and completed only seven laps before being knocked out by a broken clutch shaft, driving a Wisconsin powered Stutz.
lieutenant would be his last Championship Carolina start.