The car the kidnap victims are in is a Ford Fairlane. The interior changes from a black vinyl to a light brown checker pattern from act to act. Sometimes the interior changes from a view of the people in the front seat to the view of the people in the back seat in the same sequence.
The 1957 Ford Ranchero (yellow/white) is shown in the gas station scene. The hood is opened all the way. On this particular model Ford, the hood is hinged at the front rather than at the firewall (windshield), so the hood looks sort of funny.