The car has been marketed as particularly durable and robust. To show this, Elon Musk brought up his chief designer, Franz von Holzhausen, on stage who had to hit the car with a sledgehammer. But when it was time for the momentum to throw a steel ball at the side windows, things didn't go quite as planned - they broke. Something that should be almost impossible as the windows are reinforced and almost unbreakable.

Elon Musk swore before saying, "Maybe it was a little too hard."

See what happens on stage when Tesla shows off her new electric pickup.