Recently a "Grateful Motorist" extolled the virtues of gas pumps that have hold-open nozzles. This is not only illegal (you must stay with the nozzle while dispensing fuel), it is also highly dangerous.
When someone gets back into their car and then gets back out, they have a high chance of creating a static energy charge. When you then touch the nozzle, you can create this "spark." Gas vapors are right near the nozzle and can ignite. Don't say "That won't happen to me."
Better yet, if the pumps are running slow (should be 8 gallons a minute), tell the clerk on duty. Make the site fix the real problem (clogged filters or other mechanical issues).