Yes, folks, cheese racing. The basic concept, if you are as confused as I was: everyone throws down a slice of Kraft wrapped in plastic on the BBQ, whoever's inflates furthest fastest wins. Best explained by this pic:
No, the plastic doesn't melt (!), but CRASS, the Cheese Racing Association, suggests using those cheap-o disposable supermarket bbqs just in case. Also, easier clean-up. Also on their site, entertaining pics, complete rules, tips from the pros and advice on hosting your own racing event.
Start your processed cheese food slices.