Hell on Wheels is a 1967 American action film about stock-car racing that includes musical performances by several popular country and western singers.
It stars Marty Robbins, a popular and successful singer who also dabbled as a NASCAR race driver for a number of years.
Del opens his own garage, building "tankers" for moonshiners on the side, ignoring the requests of his girlfriend Sue.
The brothers are also regulars at a local club where musical performances by Marty Robbins, Connie Smith and the Stonemans are featured.
John Ashley later recalled: "Marty was a terrific fellow and a great singer, and I was a big fan of his.