The easiest way to be a Gas Rustler is goto an auto graveyard and take off the license plates, then put them on YOUR car, drive up to a gas station where you can fill 'er up before paying inside with cash, fill your tank, and then Speed off and away!
Its BEST to do it at a rural gas station along a highway. Drilling a hole in a gastank is VERY obvious and if its made of Metal cos drilling metal creates sparks and friction which can ignite the gasoline and result in you getting burned to death
. If your car can run on diesel than trucker stops are also easing pickin's if you have a fuel pump
. Just pry off the gascap late at night and siphon the fuel!