It's illegal here, but people do it anyways. If the SPCA catches them they get a fine. It's only like $50 or something stupid like that.

My friend has a GSD that her dad used to tie in the back of their truck. Now, tieing the dog in the back of the truck is alright, if the dog is tied on a short leash, and right in ther middle rather than the side where he could flip over the edge. He was tied in the middle, alright, but they seemed to have forgotten about the "short leash" part. He was tied on a long leash. He jumped out and was dragged for miles before he was noticed. His paw pads were completely gone.