The only Sprint Cars that I can find available are the WCM and the Pro1. Is that really all thats left in production? I have seen some with a driveshaft and rear axle. I don't like the idea of a belt and pulley system. I understand it is most likely far more efficient, but I can only assume that rocks and pebbles from a non-perfect track condition will wreak havoc. Any Sprint car advice will be much appreciated.