New Jersey's gas pumping law was passed in 1949 for safety concerns. Oregon is the only other state to have a similar law. Why the laws remain today, when pumping your own gas is fairly safe and common, probably has more to do with people losing jobs and the difficulties in changing something that has been effect for so long.
I live in a small community in Pennsylvannia, 2 minutes from New Jersey, and we must have a local law or something, because none of the stations in town let you pump your own gas. Everywhere else I've been in PA I can pump my own gas.
I find it a pain to wait for an attendant, and avoid getting gas in my town, but my wife likes the convenience.
Either way it seems like it was the delivery driver that messed up Buff's VX.