Fuel overflowing!?!?

I see this a lot on the newer cars with emission systems. The fuel tank vent clogs and there is nowhere for the air to go and the pressure shuts off the pump. Most of our cars have had gas pumped in so many times the fuel filler isn't exactly a ... how should I say this ... tight fit? So that isn't usually an issue. If you are sure you were low on gas and this is not a gauge or sending unit problem, I would check into tank pressure not venting.