Sometime in the early to mid Sixty's, Wheel Horse being an Indiana based Co. started supplying all the race teams at the Indy 500 with a GT to push or pull the race cars to and from the garage to the pits. Shortly after Indy started using then, Mr. Pond came up with the idea of all the teams riding the GT's around the track for one lap (2.5 Miles). They would start out in 11 rows of 3 abreast, but it didn't take for the drivers to turn it into a race of their own. Some of the drivers figured out how to hold the Governor open to go faster and it's a wonder they didn't blow up those Kohlers, I never heard of one coming apart. Each one of the actual GT's used by a team had a special plaque mounted on it to show it was used at Indy. By the mid-seventy's other GT Company's got in on the action. But for about 8 years, Wheel Horse was the King of the Indy 500 !!
BTW, Each year the winning driver of the race received a new Wheel Horse GT and Attachments as part of their Winners Purse. Wouldn't be neat to find and buy a Wheel Horse off of someone like AJ Foyt or Al Unser !!