The 2006 documentary 'Greasy Rider' follows filmmakers Joey Carey and JJ Beck as they travel cross-country in a 1981 Mercedes-Benz 300d modified for $800 to run on waste vegetable oil.

This isn't a road picture, though. Nor is it a condemnation of the oil industry. Rather, it's somewhere in between, and it's our pick for free movie of the day.
categories Video