"...vapor loss is very very small..."
GM had to recall a fleet of cars because the fuel lines were not sufficiently impermeable.
The fleet of Transitional Zero Emission Vehicles have addressed the residual pollution sources: those nasty gaskets in the fuel system. So they weld the fuel system together, and give the system a really long warranty.
If people were paying attention, they'd realize how clean burning modern cars really are.
The dribbles of petrol from the pump nozzle - that is getting towards the top of the list.
Biting the hand that feeds IT
