driving in his 1936 packard, we talk about the grapes-of-wrath era, when writer john steinbeck described route 66 as the mother road that led so many impoverished people west in hopes of finding work. >> imagine this in the '30s, the dust bowl days. people from missouri and oklahoma with no place to stay, no food, in a model t ford truck, get on this road to go to california. >> was it almost like a convoy of people leaving here? >> oh, absolutely. a continuous stream, and, to me, this old piece of highway brings that whole history of the united states right back to you. you see the concrete on the sides? >> yes. >> those are the curbs. this is the width of route 66. >> wow. very narrow. >> this is it. so if you met that old mack truck coming the other way, you would do this. so you had 2 wheels of the car on the pavement and the other two in the gravel. >> route 66 takes us right through the center of afton, where an old 1930s gas station has been transformed into a museum for dave's antique cars and route 66 memorabilia. [horn honks] my route 66 time travel continues into the 1950s, wh