It means the vehicle is in working order and has sufficient fuel to be driven. It also means the person has a certain minimum set of skills for vehicle operation.

Let's also mention that it means the vehicle absorbs all visible colors of light except red.

when i had a red car it was the best deal on the lot, meant i had $ smarts.

+5

they did not successfully complete the tasks involved in freudian development's oedipal complex and they still relate to the opposite sex and they must drive a red vehicle in order to assimilate societal expectations upon them that they otherwise feel inadequate to perform. or, they like the color red.

Their vehicle has a coat of red paint on it. That's it.

Actually given the literally insane state of rhetoric that seems to be going on in American politics, it probably means that you're a commie fascist granny killing liberal. Or so Glenn Beck or whichever retard is vomitting words at you from Fox would have you believe.

He has a red car?

MY theory is that 90% of red car owners are good looking blonds. I asked a dark haired guy if it was his girlfriend's car? He told me it was and asked how I knew?
He confirmed that she was a good looking blond.