LPG was fairly popular here about the time of the gas shortage until some idiot in a pickup went through one of the local car washes. I don't remember the exact particulars except that a part of the car wash equipment got entangled with a hose on the tank or some such thing. The result was a major KA-BOOM which leveled the car wash and killed one, if I remember right, and injured a few more and they had to send out a search party to find parts of the truck. I'll stick with gasoline.