You must have a very small tank. I have a 35 gallon tank...multiply that by 4 bucks. $140 ain't chump change to me.
Toyota Avalon, maybe 14 gal. tank, Toyota Matrix, maybe a 12 gal. tank. And gas here cost $3.77 or so a gallon.
So let's see, your hub caps may cost a $100, and so does the gas in your car. So using deadly force to stop them stealing your hub caps sounds right, hmmm?
Ok, hope were you live the laws says you cannot be sued if you use that deadly force to recover the $100 bucks of gas or hub caps. It's called "wrongful death". Think about it befoe you shoot on some kids stealing your gas.