The Long, Long Trailer (1954)
Crew or equipment visible
Errors in geography
To go to Colorado from L.A., one goes to Las Vegas, then normally north through Utah to Grand Junction, Colorado, then across the Rockies to Denver on a big open highway, Interstate 70 (all be it high altitude past Vail skiing resort), or take the southern route to Flagstaff Arizona (see the Grand Canyon) then to New Mexico (Mesa Verde), before going north to Denver (tho they'd lose the mountain-crossing scenes (unless they turned north too early--which would have required them to cross Pike's Peak, the craziest steep road over a mountain anywhere at the time.
Instead, they make a haywire trip North up the California Coast, over to Yosemite and then who knows where? They find lots of traffic, towns... She even has a rock from the Snake River--up in Idaho? When they finally do cross the Rockies, it's on a southern desert route, no large interstate hwy as crosses the mountains into Denver--seems the alternate route was the more dangerous for a trailer. Huge desert vistas can be seen that are not in the Rockies.