Three men are short listed to become new mechanics for the Ferrari F1 team. In final test they have to show how quickly they can take the wheels off an F1 car.

The first guy steps up and does it is a commendable 6 seconds.

"Well done," says the overseer. "What's your background?"

"Car Mechanic."

The overseer nods and notes this down as the second guy steps up. The second guy does