"Most people are really stunned to find out that the technology has been around for more than 100 years, and that the diesel engine was in fact invented to run on vegetable oil."

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I even had success with commercials, which is strange, because out of the six ideas, two won the platinum Minerva in France - it's the Oscar for their commercials. One was about the Renault diesel and the other about the regular Renault.

— Sergio Leone