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Running a car on kitchen grease is a science lesson on wheels, with some economics thrown in: you learn about mechanics, thermodynamics and molecular chemistry. And you drive for free. But free driving has a high price. Take it from Nathaniel Poole, who drives a 1991 Mitsubishi Delica van that runs on scavenged oil. Instead of pulling into a gas station, he drives around with an electric pump and lengths of tubing, sucking out the contents of restaurant grease vats and turning it into fuel.

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Nathaniel Poole and his grease-mobile.Peter Cheney/The Globe and Mail

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Nathaniel Poole scavenges for oil to run his Mitsubishi Delica van.

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Nathaniel Poole’s grease car parked on a beach with the tent on top.`

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Nathaniel Poole shows off the engine in his grease car on Vancouver Island.

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Nathaniel Poole filling up his grease car.

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Nathaniel Poole and his vats of grease for his van.Peter Cheney/The Globe and Mail

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Hoses for grease in Nathaniel Poole’s van.Peter Cheney/The Globe and Mail

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Nathaniel Poole’s grease-mobile.Peter Cheney/The Globe and Mail

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Nathaniel Poole’s grease-mobile.Peter Cheney/The Globe and Mail

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Nathaniel Poole’s grease mobilePeter Cheney/The Globe and Mail

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Nathaniel Poole and his grease-mobile.Peter Cheney/The Globe and Mail

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Nathaniel Poole inside his grease car.

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Nathaniel Poole’s grease car with the tent on top.

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Nathaniel Poole’s grease car with the tent on top.

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Nathaniel Poole’s grease car.

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Nathaniel Poole’s grease car

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