I know its old, but...

Three men, a physicist, a engineer and a computer scientist, are
travelling in a car (Vanagon?). Suddenly, the car starts to smoke and stops.
The three astonished men try to solve the problem:

- Physicist says: This is obviously a classic problem of torque.

                  It has been overloaded the elasticity limit of
                  the main axis.

- Engineer says : Let's be serious! The matter is that it has been
                  burned the spark of the connecting rod to the dynamo
                  of the radiator. I can easily repair it by hammering.

- Computer scientist says : What if we get off the car, wait a minute,
                  and then get in and try again?

Alistair