Did that several years ago when I flew to Phoenix to purchase a car and drove it back largely via old 66. Awesome trip - just wish I had taken more time....
my parents live in Kingman, AZ...route 66 is the main drag through town.
Was out there a couple of years ago, and drove the old route through the mountain passes from Kingman to Loughlin, NV. very cool ride.
In spite of the fact that I was driving my mother’s 2001 Buick, and she was riding shotgun, nagging me the whole way not to drive off the side of the road, (no guardrails, you see), it was a very cool experience.
we took 6 weeks and could have taken much more time.