Main Street of America, constructed in 1926, travels from Mountain states, to Mid-Atlantic states, but once traversed the whole Nation. Drove partway from Ca to Texas and stopped by some of the unique attractions along the way. If you ever take a road trip in United States, you'll probably end up somewhere on route 40.
You will see a Meteor Crater in Winslow, Petrified Forest National Park, Cadillac Ranch in Texas, Sandia Peak World's Largest Tramway, and a large Cross in Groom, Texas.