Re: Idea...
Well I am told you can enter the numbers of your postcode with trailing 0's to American fuel pumps
so when getting petrol at the pump in the USA with a British credit card, when asked for the zip code enter the digits from your postcode, ignoring the letters, and then enter zeros (0) to fill the remaining digits until you have 5 digits in total. For example, if your postcode in the UK is aa29 1aa enter 29100; if your postcode in the UK is a1 1aa enter 11000.
Not tried it myself yet . As only just learned of it …
as we normally play the umm try $20 and get surprised when it buys a tankful on a huge car when at home it would have tickled the fuel gage on our car that would fit into the boot of the average USA gas guzzler