Once the car’s filled without hanging up the nozzle he’s gone to the back of the vehicle to fill what looks like a fuel can. (SYNC) During the dispensing of fuel, whether it’s into the tank of your car or into a can, there is a build up of static (V/O) energy and that static energy needs to escape and (SYNC) what’s happened in this situation is that a spark has gone from the nozzle (V/O) itself to the can and ignited the fumes from the fuel.