Propane was a highlight at last week's Odyssey Day clean-fuels expo in Rogue Valley, Ore., officials say. No new technologies are needed to make propane a viable fuel, officials added, and switching would reduce motorists' emissions by about 86%. "It's showing people that there are alternative-fuel vehicles out there that are available on the market today," said Mike Quilty, a board member of sponsor Rogue Valley Clean Cities.

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