An eclectic assortment of alternative-energy vehicles hit GM this week . The display attracted Indiana senators who could n't resist taking the cars for a spin . The event was organized by a carmaker from Indiana to showcase its plug-in hybrid . The Pepco vehicle , the kind seen repairing downed power lines , runs on biofuels that range from discarded cooking grease to soybean oil . Display included cars from GM , GM , ZENN and Capitol Hill , among others .
An eclectic assortment of alternative-energy vehicles hit GM this week . The display attracted Indiana senators who could n't resist taking the cars for a spin . The event was organized by a carmaker from Indiana to showcase its plug-in hybrid . Display included cars from GM , GM , ZENN and Capitol Hill , among others .