July 2010 The Kohler International Challenge is an annual peak-of-summer tradition for both partcipants and spectators.
For spectators it's a blend of art on wheels and great competition between everything from cult favorites to priceless limited production models.
For participants its the chance to mingle on and off the track with fellow vintage enthusiasts and special guests including event host Brian Redman. Whether it's pushing the limits on Road America's legendary 4-mile circuit, touring in a sports car or entering the race car and sports car Concours d'Elegance, this weekend is all about vintage cars. No other vintage event in the country draws more eyes or wheels.