On Wednesday night I watched a movie titled EDGE OF ETERNITY directed by Donald Siegel....with Cornel Wilde and Victoria Shaw and Mickey Shaugnessy....
I had never even heard of this 1959 film.....it was filmed on location in Kingman, Arizona, in Mohave County. There was a lot of filming at the Grand Canyon with airplanes and helicopters....it was very exciting in color and CinemaScope. They also used a "dancing bucket" across the canyon for the exciting ending.... Special credit was given to U.S. Guano who owned the equipment.
I saw it on Encore Retro channel, but it might be available elsewhere.
Shaw drives a yellow 1958 Thunderbird convertible and wears some great clothes, her brother drives a 1958 Edsel station wagon, and her father drives a 1958 Lincoln, although we only see it parked in the carport.