In addition to being an extended-range electric vehicle and offering the attendant ecological and economic benefits of such a car, the Cadillac ELR (www.cadillac.com) is a design showpiece. Like the Converj concept car of 2009 from which it evolved, the ELR combines arcing and slashing lines for a look that is both elegant and sporty. Most notable is the front end, with its cascading headlamps and shuttered grille. The $76,000 coupe’s leather-lined interior is sufficiently comfortable for the 300-plus-mile trips the ELR can make on a fully charged battery pack and a full tank of gas. The batteries alone are good for up to 37 miles, which means drivers can make most commutes without using any gas to power the car’s 1.4-liter 4-cylinder engine. The car delivers 295 ft lbs of torque instantly and features a complete array of driver-assist and safety features.