Back in my teens, when I was just starting to drive, one of the appeals of a motorcycle was that, when I screwed up, I was going to be a risk mainly to myself. In the family Impala—a huge aircraft carrier of a car—a moment of carelessness could kill a whole family or two, but a mistake on a motorcycle would probably injure only me. That concept has been rolling around my mind again, because, if my driving abilities taper off, I’ll be less of a hazard to the rest of the world on a motorcycle than in a car. Put another way, if I can’t manage a motorcycle, is it responsible to be driving a car? Plus, by then gas will probably be pushing $20 a gallon and with Social Security in doubt, who will be able to fill up a car?