that car is slick or cookin' (or insert other lame slang to describe a cool innovation)

From Bill Wolfe in the C-J (although not available on their website), who starts with his own nice little pun...

When Larry Greenwell fills up his diesel-engine Volkswagen Beetle, he can laugh all the way to the tank....Greenwell's 2006 VW runs on used cooking oil that he buys for about $2 a gallon. One 13.5-gallon tank takes him nearly 600 miles -- an average of about 44 miles per gallon, slightly less than he might get with standard diesel....Greenwell's car is one of nine vehicles converted to burn vegetable oil for Legacy Development Corp., where he is purchasing manager....

The company's love affair with conversions began in 2006, when it bought six new Volkswagens and had them converted by a Louisville company, The GoodOil Boys, using kits made by Greasecar Vegetable Fuel Systems in Easthampton, Mass. Since then, it has added a 2004 Jetta, an Isuzu box truck and a Ford F-450.

A major attraction was the reputation of vegetable-powered engines to run more cleanly than petroleum-fueled vehicles....

Conversion includes installing a second fuel tank for the vegetable oil and running a second set of fuel lines. Converted vehicles can burn either regular diesel or oil -- and must be started and warmed up on petroleum, especially in cooler weather. Once the engines are warm, the driver flips a lever to switch from diesel to vegetable oil.

When shutting down, the driver switches back to diesel for a moment "so the vegetable oil doesn't coagulate in the line."

The company buys its oil from GoodOil Boys, filtered and ready to burn, 300 gallons at a time, he said....