[sleepybrett]

'we know we sold you 50 gallons of gas, but you are only allowed to use 40 gallons.'

[olyjohn]

Nobody ever uses more than 40 gallons though. So if you do, you're abusing the system.

[subscribed]

If I'm making a lot of short journeys in the heavy traffic I'm using a lot more than someone who commutes 20 miles on the quiet country roads.

Your assumption that having higher use is abuse is malicious and wrong.

It may be uncommon but it's as legitimate as someone's else.

[LocalH]

So making someone pay for 10 gallons of gas they're not allowed to use is fine with you?