Here are a few places of note for photography and perhaps video.
The Route 66 Wigwam Motel in San Bernardino and a similar place in AZ. Both are on Route 66 which is the true original road pre I 40. Williams Az itself seems to be a Route 66 historic town. Near Williams is an aviation museum with a good outdoor collection of aircraft worthy of a flyover. Just west of Amarillo Texas is Cadillac ranch which has about 12 Cadillacs at least “planted” at 45 degrees. It’s off Route 66 and free access. All the cars have been painted with psychedelic spray paint.
Aliong Route 66 proper there were remarkable roadside diners and shops where you can see rattlesnakes and Dinosaur “eggs”
Of course you pass near to Grand Canyon but north of I 40 and east on the National park there are roads in the Navaho area with gorgeous red rock scenery.
That’s my 5 AM memory list and I am sure others will add to this. I 40 parallels the historic Route 66 where all the towns and funk are located. I hope you are doing this in a corvette convertible.
Remember, Route 66’s terminal point is or was in Santa Monica on Ocean Blvd and Wiltshire Blvd overlooking the ocean at a statue of Saint Monica.