How to Use a Tennis Ball to Unlock Car Doors Without a Key

The Next Three Days is the new film by Paul Haggis (Crash), which stars Russell Crowe and Elizabeth Banks. Laura (Banks) is accused of murder and sent to prison, and her husband John (Crowe) struggles to prove her innocence while taking care of their only child. But the system does not work for John, and he's forced to take extreme actions and attempt a prison break.

In the movie, John is an ordinary man, a professor at a school, who learns about the workings of the prison system, the city's response time with an escaped convict on the loose, and the how-to of breaking someone out of jail. One of his necessary tasks involves unlocking doors, and after watching a few how-to videos on lock picking, decided to try out the bump key method for prison doors and the tennis ball method for vehicles. And in this how-to video, you'll learn just that… how to break into a car using a tennis ball with a scorched out hole.

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The process is simple. Burn a hole in the tennis ball. Then, take the tennis ball to any car door and place the burnt hole over the keyhole. Next, press (or smash) as hard as you can, and the air pressure from inside the ball will travel through the keyhole and forces the locking mechanism inside the car door to unlock. This is popular method with car thieves… but really… this is great for all of you who have problems holding onto your car keys. If you ever leave your keys in the ignition, this is the way to go. Forget AAA or pricy locksmiths!