[3] He and four others drove in shifts non-stop to establish the record of 76 hours at the end of September, 1903.

Other drivers in both years included Bert Holcomb (who was in charge of the runs), Lawrence Duffie (Demonstrator of the Gasoline Dept of Electric Vehicle Company, which manufactured Columbia cars), and Harry Sandol.

Harroun is best known for winning the first running of the Indianapolis 500 Mile Race on May 30, 1911.

From 1909 to 1911, Harroun drove primarily for the team operated by Indianapolis-based auto maker, Marmon.

In 1927, the Contest Board negated their history; points were assigned retroactively, and National Champions were designated for those years.

[4] At the inaugural Indianapolis 500 in 1911, Harroun's use of what would now be called a rear-view mirror, rather than the riding mechanic specified in the rules, created controversy, but was ultimately allowed.

The venture folded after World War I, and today a street in Wayne is named for him.