Here in the UK, I am qualified to test and inspect electrical installations in Hazardous areas. And (as you would imagine) there are some pretty strict rules.
I do a lot of petrol stations and yes I have seen people drive in and fill up while smoking.
Part of the regulations stipulate that the cashier must have an unristricted view of the forecourt and a loudspeaker system (in perfect working order) to warn the drivers.
Do they use it - do they hell.
But worse than drivers smoking - there is (in the UK only I suspect) a worse danger lurking.
Some stations have a mains supply that is called PME (protective multiple earthing.) Which means in short, that they dont get a neutral.
The earth on the main incomer is connected to the neutral (usually the metal armour of the cable) this is then grounded outside by earth rods.
It happened once that the earth rods failed and so the entire current the station was using went into the ground via the pipes feeding the petrol to the pumps. The petrol tanks were in effect the earth rods.
The current flowing into the petrol tanks heated up the petrol until BOOM - the lot went up.
The rules were changed so that stations cannot be supplied by this method - but many still exist this way.
I have to test the current flowing down the main earth cable to prove that the earth rods are intact and working.
I find a lot are carrying far more than the regulations allow - when I report this to the authorities (the main fire department) They shrug and ask me my opinion. But nothing ever gets done.
They supply me with a big red official padlock to lock off the main supply if I think its not right