Cheech and Chong at first get gas in Chicago, but when they reveal they're strapped for cash, the man at the gas station takes a piece of the car as payment. With that idea, Cheech and Chong find themselves driving across the country, selling parts and pieces of the car for gas, food, and supplies. Soon, their car becomes a wreck and looks messed up, but Cheech and Chong continue to sell parts to get by. While out in the middle of the deserts, they decide to pick up a hitchhiker, who turns out to be none other than Donna, Cheech's girlfriend. The two decide to take Donna in their messed-up limo to the nearest gas station. However, Donna is traveling with dozens of Mexicans, so the stoners end up driving all the Mexicans and Donna to the nearest gas station. To pay for gas, Cheech and Chong give the old man that runs the place a chair from the limo—which unknown to them is stuffed with the Arab's money.