You may remember a video that we showed on Autoblog where someone poked a hole in a tennis ball, lined up the hole in the ball with the key-hole of a car, pressed really hard, and the door unlocked. After reading your comments from that post, we decided that it was definitely worth testing to see if this tennis ball technique works for ourselves. One of the commentors from the last post on this subject used pressurized air to try to unlock four different doors to no avail, and another used a plunger (we wish we had video of that) but nobody tried a tennis ball like the video in question.

Hit the jump to see what happened when we tested the "use a tennis ball to unlock your car" trick. We tried it on four different vehicles, and we used two tennis balls, each with a different-sized hole in it to verify our findings. Check it out, and if you have a tennis ball and a screwdriver lying around the house, try it yourself and let us know in the comments if you got the same result we did. We're guessing you probably will.

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