Hmm... I haven't heard of that method at least out here in the west. Sounds like either some sort of "random" pool of people's VINs in your state, they don't have the resources to test them all, kinda like the IRS with yearly audits. Just a random sampling. but I would watch your rites. If something doesn't seem random to you, profiling is illegal in any state in this country. Hope it all works out.