A quick and cheap ible, I drive a company vehicle and use a fuel card so always fill the tank to the top. As my 4x4 has an 85l tank this can take a while. If you hate holding the pump while you fill too this one is for you. Simply insert your fuel cap under the depressed lever, the anti overfill will cut out the pump when full. Now you can day dream, grab your coffee or do something else productive while you fill.
please note this is possible with European pumps, I am not sure if other jurisdictions use a different nozzle or already have a latch.
*photos were taken in a petrol station under construction with a dead pump, don't ever use electronics at the pump, there is a fire/explosion risk