It looks like he wants an autocross object that's just a square of asphalt so you can create grippy areas where previosuly there were none (like on the grass, or in gravel traps).
I don't think this will work very well though, as they'd only really work where the ground was completely level.
It'd be nice if it would work, but somehow I don't see it working as well as what we'd like. I wanna be able to make the ground eneven and make banks or something, but I don't see that happening either.