I have a motorcycle model that's been made from 88 to now that is known to have only three key combinations, the key blank and lock is also used in another popular brand. when fellow riders group up for fun they sometimes see whose keys work in whose bikes. Also my mother once opened someone elses Ford Taurus in a grocers parking lot it was the same color and year, but was alot cleaner inside. Also I found out after a couple years that the keys to my dodge truck open my stepfathers plymouth K-car!
I remember the scene in "No Man's Land"
http://www.imdb.com/title/tt0093638/ where D.B. Sweeney asks for the keys to open a Porsche in a dealer parking lot that Charlie Sheen says is his, he is handed a keychain with twenty or so keys on it, Sheen says here it is, I can't remember which one it is. Then there's "fear factor" where the contestant have to find the right key before the cars is dropped off a cliff or run over by a steamroller if they want to win... is that show still even on?
This all reminds me off the circular lock Bic pen thing a few years ago, IMO just another way into scaring people into buying more stuff, also I recall Kryptonite came out very quickly with a conventionaly locked model hmm... very curious, the corporate wheels don't move that quickly, I used to work in manufacturing and it was a relatively small company and even then it took a relatively long time to make major design changes. To confirm suspicion there were even sidebars to how they were changing the design in reports of how easily these locks were subverted, scare marketing for sure.
Am I being paranoid? I left my house for several weeks and took everything valuable and left it with a friend, it was a huge pain but sure enough my house had been broken into, they destroyed two of my rear exterior doors to get in, I wish they had used "bumping" as all that they took was some broken power tools that I had been packratting and been recieving complaints to throw away, the only loss was from the damage to my doors and loss of sleep from all the crickets that had moved in