An electronics, mechanics and IT engineer drive down a deserted road and the car breaks down... They pop the hood and jump out of the car... The electronics engineer starts checking all the wires, spark plugs, battery and says "I have no idea what's wrong". "Me neither", says the mechanical engineer after checking the oil, machine, exhaust etc. "Get in the car!" says the IT engineer. They get in, the IT guy closes all windows, reopens all windows and says "Drive!"