STOP THE PRESS!!!!
You want an ideal grippy track surface??
How many of you live near a yachting chandlers??
If so go in there and ask for the additive that they use to paint deck surfaces. This is very small grains of polycarbonate which, when added to a suitable paint, will make an extremely grippy surface.
Warning though using this material will start to eat into your tires if you are really harsh with your charg. Just like real racing though.
