Smooth Coats: Put your car under an incandescent bulb between paint coats. The warmth smooths the surface of the paint as it dries. More Tips
Friction
Friction –
a: the rubbing of one body against another; b: the force that resists relative motion between two bodies in contact.
(Source:Merriam-Webster's Collegiate Dictionary)
Two types of friction come into play with CO2 racecars: surface friction and fluid friction. Both of these are inversely proportional to speed!