Jill: Tim, the car is running fine.
Tim: It used to be running fine. Inside of a car is an internal combustion engine. Composed of many precision parts running at a high RPM. High RPM produces friction. Friction produces heat. Heat is dissipated by lubrication - oil. When the car didn't get the oil that it needs, it tends to seize up into a rock.
Jill: Are you saying the car's not running?
Tim: We now own a 4,000 pound, four-door boulder.
Jill: You mean I can't drive it?
Tim: Not unless you're Wilma Flintstone.