VW’s X1 concept car hits 62 miles on one liter of gas

I’m attending the Society of Environmental Journalists annual conference in Chattanooga, Tenn., this week. Thursday night, those of us mingling in the conference sponsors’ exhibit hall got quite the treat: Volkswagen (which operates a LEED Platinum plant here in Chattanooga) was on hand to unveil the X1, an uber efficient concept car that’s never been seen in the U.S. before.