hobby probly used calcum in there dirt to keep the clay fron coming apart that what makes ur car rust red clay whuld be sick in side no sun to dry it out what u shuld do is go to some local indoor races barnstormers rchr lir look on youtube at tracks puting a oval in i dont think is a good idea it hasent worked anywhere else barn tryed it 4 ppl whent rchr had one and took it out its just not what it use to be yeah its ez to lean on but whats the good if u cant turn right or hit jumps somany ppl go to dr cuz the track is ez no ur can hit all the jumps wot all im saying is look befor u leep u have a great chance to make a sick track and it close for a lot of ppl from ny nj that drive an 1-2hrs to race or practice