Reply #8: Yeah, you pretty much need to open the valve wide [View All]

[Warpy]

and even then only what escapes into an enclosed area will really explode with any effect.

The goober had a busted out window in the back of that Pathfinder. Even if he'd had the sense to spill the gasoline and start that car on fire, it's doubtful if the internal temperature would have gotten high enough to burst those propane tanks. Those things are designed to survive stupidity.