It wouldn't be like a missile. It would be a missile.
A few years ago, I was lucky(?) enough to see first hand what happens when the neck of a full argon tank gets knocked off. The driver of the delivery van left the tank standing near the edge of the lift on the van while he pulled closer to the delivery dock. I still don't know what he was thinking; he was new, and we never saw him again after. The movement of the van tipped it over, and the tank and hand truck fell off the lift over the edge and the top of the tank hit the pavement at almost 45°. The valve broke clean off and the tank launched itself. When the smoke and dust cleared, we saw it had punched a hole through the top of the van box, "flew" about another 100 yards, and left an impressive trench in the vacant lot down the street.
Ever since, I don't like driving my car around with even one of the small CO2 tanks for the MIG in the trunk. There's no way I'm buying a car with something like that built in.
Make mine BioDiesel. It works. Today.
Oh, and where's my Diesel Harley?
I've never seen one go off, but I've heard about it happening. Like I said, whenever I transport them in the truck, I keep them with the caps on, disconnected from the welders, lashed down and blocked in on all sides. I don't want to take any chances.
I have several diesel items, but I haven't tried any biodiesel stuff quite yet. I did some research on the production processes when I was in college.
Apparently, some guy in Lancaster, PA managed to convert his Harley to biodiesel. It was in one of the magazines a few years ago, anyway. Also, the Marines have a diesel variant of the Kawasaki KLR650 they're using. I don't know if there's a civilian version yet or not.