I have busted two mythbusters conclusions in the past. Those two guys are jerks. My buddy drives a limo nights and picked them up at the airport, and they wouldn't even give him an autograph. But anywhoo.. I remember another friend of mine had a video he used to play over and over to show off his surround sound. It was several guns starting from a .38 going up to a 50 cal. shooting a gasoline tank. NONE of them ignited the gasoline.
I'm pretty sure those tanks are rented from the company who fills them, they might come looking for it.
If you have nothing worth dying for, you have nothing worth living for.