A close relative of mine has a wife who is a pain in the neck. One of her weird habits has to do with "new" car purchases. Anybody who gets a new car in her family (husband, daughter, son) has to first let her drive the first few thousand miles or so, or she throws a fit. (Honestly, I'm not making this up) His sons and daughter are thinking about buying him a new car for his birthday, but they are loath to the idea of his wife grabbing it and driving all the new off of it. (This family's dynamics are too strange to relate here.) A couple of his kids and I were talking about this problem, and I said there ought to be some kind of electronic device that can be attached to the car which would only allow him to drive it. And something like a special key or a coded keypad won't do it, he'd just buckle under her pressure to give it to her. Anybody on here ever hear of a system which would only allow a single adult to drive a particular car?