Oldsmobile Puns

An oldsmobile

I brought my car to the emissions check for Colorado. For those not aware, most information is based on the car, not the owner, so they don't really take any information from you when you first arrive. After my car was done getting its emissions tested, they called me from the waiting area. The lady opened the door and loudly called out "Oldsmobile!" I had to ask how she knew that was my name.