Other mistake: When the bus starts to leave the Hoover dam (as seen through Dallas' binoculars), the driver is missing. The steering wheel is shown with no-one behind it.
Other mistake: When Beavis and Butthead start walking through the desert, their shadows don't match the direction in relation to the sun.
Answer: It was a variety of 70's cop shows. The car is from "Starsky and Hutch" (just a different color). The opening style is from "Charlie's Angels." The song is similar to the song from "Shaft" and a parody of "Two Tough Guys."
Bishop73