This was the third and final film where Elvis Presley played a character whose first name was Mike. The first time was in It Happened at the World's Fair (1963) in which his character name was Mike Edwards; the second time was in Fun in Acapulco (1963) released in the same year in which his character name was Mike Windgren. This time his character's name is Mike McCoy.
One of the very few films that show a Cheetah sports car racing. Bill Thomas' Cheetah was an extremely rare sports car that was designed to compete against Carroll Shelby's Cobra. Additionally, the "Fox Five" was actually a McLaren Elva. Being able to watch these cars in action is almost worth the price of admission.