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In the very first Indianapolis 500, Ray Harroun gave the automotive industry one of its greatest safety innovations when he rigged a mirror above the dashboard of his race car so he could see oncoming traffic. By doing so, he did not have to use a “riding mechanic,” which gave him an advantage in the race. Though he still needed a relief driver, Harroun was in the cockpit for the last part of the race and drove to a 1:43.00 margin of victory over Ralph Mulford. (IMS Photo)
GALLERY: Classic Photos of the Indianapolis 500

In the very first Indianapolis 500, Ray Harroun gave the automotive industry one of its greatest safety innovations when he rigged a mirror above the dashboard of his race car so he could see oncoming traffic. By doing so, he did not have to use a “riding mechanic,” which gave him an advantage in the race. Though he still needed a relief driver, Harroun was in the cockpit for the last part of the race and drove to a 1:43.00 margin of victory over Ralph Mulford. (IMS Photo)

GALLERY: Classic Photos of the Indianapolis 500