Anyone been on old US66 between Kingman AZ and Oatman AZ lately. I have driven it in my truck several years ago. While it is not a road you want to take a large vehicle on it was passable in a truck...
Great day-trip in a car or something smaller than a F550. Very curvy, some corners marked at 15 mph, so it wouldn't be as enjoyable towing or in a large motorhome.