I was thumbing through my US Stamp Catalog the other day on an unrelated matter, and came across this stamp which I had forgotten about but would relate to this topic, as it has both a car AND a truck (and a even a tractor) all on the same stamp.

It's Scott #1162. Now be honest ... how many really remember this stamp? I, for one, have dozens of them in a stockbook, and of course, in my US album, but it is so common and basic blue in color, that it gets passed over virtually everytime I look at it.