They were never a problem, because men regard the entire earth as a urinal in waiting. The way feminists see oppression everywhere, men see urinals. It's a design feature. Which means that if a battalion of trucks is maneuvering in the desert, guys don't care. Anywhere is as good as anywhere else.
Women see things differently.
They want a bush to go behind. In deserts there aren't any bushes. That's how you know it's a desert. So they want all the guys to stand on one side of the truck while the ladies retire to the other. Of course, if the truck is in the middle of a group of trucks, this doesn't work.