Propane prices are about a dollar and a half cheaper per gallon than gas, which is eclipsing the $4 mark in Evansville, and nearing $3.90 in Owensboro. That isnt such bad news for an Owensboro family that bought a Roush/Ford F-150 pick up truck modified to run on propane. Propane is best known as the gas that makes grills go. Roush automotive is now converting fords f-150 truck in to a propane powered model, giving consumers one more option when it comes to beating the skyrocketing cost of gasoline. Salesmen at Champion Ford in Owensboro know its not the only answer, but they say consumers are starting to spark a revolution. Champion was one of just 11 dealerships in the country selected to carry the propane powered F-150. Propane is a by-product of the gasoline refining process, so it wont be a universal replacement for gas powered cars. It burns cleaner, and is available at farm co-ops and home and garden stores across the country, though, so drivers willing to make the switch wont have trouble finding the fuel. The new trucks sell for about $10 thousand more than their gas powered cousins, but state and federal tax breaks equal most of that cost increase.