Who drives into a desert without proper preparations ‘just in case’? A couple cases of bottled water is $12 at WalMart. Get stuck, sit in the shade, drink water, flag down the next car that passes, go home alive.
Staying with the vehicle is almost (not always, but usually always) the best choice…especially if you’ve got, oh, a five-gallon jug of water in it and some methods for signalling help.
Some folks gotta learn hard.