Very true, I had a '63 Dodge max wedge conv. He may have been thinking more of a 354 Chrysler Hemi in a '55 or '56 Plymouth. That would have been a runner.
There's a panoramic picture about 9 feet long at AACA library with the original route. All the little towns, really neat. If you want to read a good book, read American Road by Pete Davies. It's a day to day story of Ike Eisenhower's cross country trip on the Lincoln Highway with a military convoy in 1919.
Walter "Doc" H. Nellis Doc Nellis from Little Falls, NY was one of those guys who went to the races just to be a part of it all. He favored the late model bodied, heavier cars whith bigger motors; but he basically putted around the inside apron of the track as the stars of Fonda's golden era whizzed by.