Has there ever been a 2 car collision at the competitions? I'm not worried about it. The course speeds are so pathetic that if a T-bone was immiment, you could probably stop or go around. There would be something to worry about if a car's throttle sticks open and the brakes fail and the brake overtravel switch fails and the car is in one of the faster gears and the driver panics instead of killing the engine. I'm willing to take that chance.