Ray Harroun’s win in the Marmon Wasp

Lore & Background

The Marmon Wasp was built by the Marmon Motor Car Company of Indianapolis, a luxury automaker. Its yellow-and-black paint scheme gave it the 'Wasp' nickname. Harroun, an engineer and driver, designed the car to be lighter and more aerodynamic than its rivals. Most notably, he eliminated the riding mechanic, a standard safety feature, by fitting a rearview mirror—a bicycle mirror—to spot competitors behind him. This innovation sparked controversy but proved effective.

In Their Own Story

The dust of the brick track hung thick in the May air, gritty against the teeth. Ray Harroun gripped the wooden steering wheel of the Marmon Wasp, its yellow body a stark, defiant slash against the gray Indianapolis sky. He had no mechanic beside him—only a small mirror, a bicycle part lashed to the cowl, to watch for challengers clawing up from behind. The crowd gasped as he took the lead on the 138th lap, the Wasp’s four-cylinder engine a steady, relentless drone that drowned out the roar of thirty-nine other machines. When the checkered flag fell after six hours and forty-two minutes, he was alone, a pioneer in a car that had rewritten the rules while the skeptics were still arguing.

Reader's Guide

Ray Harroun’s win in the Marmon Wasp defined the era of early American road racing, where drivers were also engineers and cars were hand-built. The race’s 500-mile distance was unprecedented, pushing cars and drivers to their limits. Harroun’s use of a rearview mirror and his decision to race without a mechanic were radical moves that sparked debate but ultimately improved safety and performance. This victory matters to IndyCar’s identity because it established the 500 as the sport’s crown jewel. The Marmon Wasp became a symbol of ingenuity and courage, inspiring future generations of drivers and engineers. Harroun’s triumph is a reminder that IndyCar’s roots lie in innovation, risk-taking, and the relentless pursuit of speed.

Did You Know?

• The Marmon Wasp’s rearview mirror was actually a mirror from a bicycle.
• The Marmon Wasp is now preserved at the Indianapolis Motor Speedway Museum.