With gas prices on the rise once again, people are taking another look at alternative fuel options.

One teen has made it his mission to spread the word about one type of alternative fuel - used cooking oil.

Bill Bridgers doesn't pull into gas stations with his diesel pickup; he stops at restaurants and asks for used grease.

Along with his dad and a friend, they're traveling the country telling folks about how waste vegetable oil works in diesel engines. He's been researching the idea since junior high.

Gary Johnson has his story.

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