:lol: I think its junk and you can forget about sanding/rubbing it thats for sure. I've sprayed it on some USPS Mailboxes for the city at a smaller shop I worked at a couple summers ago. Its NASTY shit man, REALLY nasty.
since its rumored that all of the people that designed that paint are dead from testing it without proper protection, i would stick with basecoat/clearcoat. the paint of vehicles today i have to believe are superior than that of the past.