Nationals last November at my LHS-
[youtube]http://www.youtube.com/watch?v=kWE9c2EW8gY&feature=channel_page[/youtube]

I don't have one yet. It is a fun class around here for every once in a while, but there are many more classes that people prefer to run at weekly events. If you don't already have car racing then this seems like a good class to start with. They look cool, the chassis are simple, and they are inexpensive.