Driving, a lot of us do it. The Federal Highway Administration (FHWA) and The U.S. Department of Transportation say there are roughly 270 million registered vehicles in the United States. That’s a lot of vehicles on the road. Well, not necessarily on the road. I have a 2001 Jeep Cherokee Limited that is still registered but the days of driving are long gone, Muffler bearings went out, the bumper valve went bad, the piston return springs are rusty on it, and trying to find a set has been troublesome, I’m guessing there are a couple of other vehicles sitting around like that but who knows how many.