Twilight Zone Incident!

[BWatson]

Last night I came out of a restaurant and when I was next to my car, I noticed It was very dirty. Strange, I just washed it. I unlocked the door and got in, the LA weekly still on the seat where I left it. Then the ignition key did not work so I tried the other key and it worked. I was just about to start the car when I noticed that there was plastic instead of wood around the shift. This WAS NOT MY CAR!!! It was a white 300D older non turbo model with the same blue interior and coincidentally, an LA weekly on the front seat. Even wierder, The KEY WORKED. My car was two parking spaces over.
I was kind enough to lock up this guys car for him (or her). I'm lucky I didn't drive away in this car. Why does my key work in this other car? That is somewhat disturbing.