Yep, that's why I wrote "...which is partially already in effect" above. I think 7,500 miles per year is my limit, but not even the 3500 (it gets by far the most miles on it) reaches even half of that on average.
Heck, the other day I noticed that I haven't put gas in the 1500 for over a year, kinda proving it's a long way from the 7,500 mile limit. The Challenger might very well be similar, and I need to put some Star Tron in at least those two.
Anyway, as mentioned earlier, different states means different rules and regulations. Which equals different costs.
Just like that registration costs, fuel prices, housing, and a bunch of other things vary quite a bit between different states.
Maybe it's more equal in Russia, but I don't want to find out..