Yeah... for some reason, I found that far more disturbing than the dead people, assuming we're talking about the same thing. :P

The realism issue that annoyed me was when they first found Arthur coming out of the bathroom, as soon as he reached for that gun, Reese should have, and would have shot him immediately.

I meant to add that in the case of the gun and the gas cans inside the car, that would have most definitely set the fuel on fire. The gun was right next to the gas can, even though its plastic the muzzle flash would have set it off.

Actually it does work. If the container holding the gasoline is made from ferrous metal, that is a metal that will spark like steel or stainless steel, you can make an explosion under the right circumstances. The container would have to not be full and the empty portion would have to have gas vapor in it. If you shoot into the part that has only vapor there is a high chance of it infighting the vapor. However if you shoot where there is liquid gasoline then most likely it wouldn’t ignite.If you were familiar with ammunition you would know that while some bullets are lead, most higher power bullets have a metal jacket surrounding the lead, when two ferrous metals come into contact under great enough force they will spark. You would not need incendiary rounds to do this.With all that being said would a gas tank explode when shot? It depends. If the conditions were right perhaps, the vapors would burn but it would be dependant on how much oxygen was able to mix with the vapor. Enough oxygen present and it would definitely explode.