That brought back some memories. We traveled Route 66 back in the 1980s on a ten week road trip taking in as much as possible of the state and national parks between Miami and San Fransisco and back again avoiding cities as much as possible. Plenty of opportunities to see the big sky.
Curiously, the French department where we spend a lot of time nowadays has 66 as its departmental number. Much is made of this connection locally as an in-joke, especially in popular culture.