So they have successfully shut off-roaders out of most of the other public lands, now they turn on the off road parks?
Seriously, there has to be a court that will realize that when you condense a group of off roaders the size of California into such small areas, there is going to be more damage to the limited area we are given. The solution is dilution! Open MORE area for the off roaders to play and the effected areas will be LESS disturbed.
I'll bet the next suits will be to take out all major highways, as they scar the desert too. But wait, if the highways get much worse, we can wheel those!