The Daring Dufas wrote:

Candid Camera did another one where they fitted a small
foreign car with a huge gas tank. This was back when the
service station attendants put gas in the car for you.
Needless to say, the attendant became quite puzzled after
pumping something like 30 gallons into the diminutive car.

A popular situation in the show was to present preposterous automotive
situations. One such event was a woman asking a service station
attendant about the difference between regular and premium air for her
tires. Who would have thought that it would ever become a real
phenomenon (regular air vs. nitrogen)?