When people came to visit me in the late 90's I used to love to drive them by Job's house in Palo Alto. I'd ride by the house every day on my commute to IDEO. You can read a lot about the house online...but my favorite part was the silver Mercedes that was parked in the driveway. It never had a license plate. Since at least 1997! I figured Jobs had paid off the cops or something, but the actual answer turns out to be even more simple and clever.