When I went to get some caches, I was having some trouble with my truck dying and then not starting. I was coming down, when the truck sounded like it was about to die, and as I was messing around with that, I took a sharp corner, that slid me down the edge of the road. The truck was hanging by a tire stuck on a rock. It took some work to get it back up the next day, but neither I nor the truck was harmed. So I consider that luck.