hahahah.that is too funny must be something with dogs and vegas, because when we went to vegas when we first got coco he peed on my hubby's shoulder!!
he was doing the same thing he would not pee at the rest stops. then when we were about an hour away he got really ansy and he crawled up my hubby's shoulder gave him this "sorry daddy look" and went i was the one driving and i almost crashed because i was laughing soooo hard! yorkies they are just too funny