Yes, they do. (I never read the whole book myself. Dave Cullen did recently, and raved about it.)
The last time I was on Route 66 was when I was taking my mother's ashes to be buried in Oklahoma City. No, wait: I travel a small part of it when I go to Payson, AZ, to friend EdelMar's winter house. It passes through Gallup, NM into Arizona, through Holbrook, Winslow, and westward to Flagstaff. Some of the old highway has been turned into almost a superhighway and has completely lost its character.