Roush CleanTech showcased two vehicles that run on propane autogas on Tuesday in Tucson, Ariz. The company promoted the fuel, saying anyone can convert their vehicles to propane autogas. "Certainly if you had the right year or model we could actually set you up with the equipment and hardware to do that conversion, most of the conversions at this point are being done at our actual facilities," said Brad Beauchamp of Roush CleanTech.

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