Lots of cars have "crashed into trees" just outside of dragstrips...
Personally, I wouldn't worry about it unless you're going to run the targa Newfoundland in the thing. It's not like the dealer is going to come out and fix the car wherever you are the exact moment you have a problem with it. If it needs towed, I'd recommend pushing it across the street though, and removing the race tires!
oh... you're talking about autocrossing. autocross is not "racing"
autocross events are driving skill contests that emphasize the driver's ability and the car's handling characteristics by driving a course that is designated by traffic cones on a low hazard location, such as a parking lot. speeds are no greater than those normally encountered in legal highway driving.