We used to do this years ago in oval racing. I painted real cars so we would use automotive urethane clear. It made the cars a little heavier, but that can be good if your light, since your putting the weight very low.
HOBBYWING NORTH AMERICA /FALCON SEKIDO/ TEKNO RC TEAM/VBC Racing America/VP-PRO RACING TIRES/2010 R.O.A.R. VTA National Champion Driving a T2R PRO/NANO-TECH Batteries Paul Rush