Originally Posted by Dude
Originally Posted by DAD22
Jimmy is in fact the official name of the GMC S-15 SUV.

True, but that's the model name, not a proper name. We don't say, "the car named Taurus," for example. It's just "a Taurus."

Some people do name their cars, though, so I suppose that part of the sentence is still not 100% incorrect.

We had a GMC Jimmy. He preferred to be addressed as James unless you were a close friend.