Q:
A: Yes, they are fairly rare but 4 in 1 gp is unheard of. It is thought that the excess heat may of allowed a dribble of fuel to stay in the nozzle when released from the car, only a drop or 2 is needed to ignie a fire, the fires are often more of a visual shock than a problem, as most of the time they just burn on the litte drop of fuel then go out, as in Nakajimas case, when he set off, the cool air put the fire out.