Chevy Volt’s Success Could Hinge on Hitting 40-Mile Range

General Motors Corp. expects its Chevrolet Volt to travel up to 40 miles (64 km) on electric power alone when it comes to market in late 2010, and the vehicle might need every inch of that range to make it the mass-market hit the auto maker intends.

“I’d be more comfortable at a 50-mile (80-km) range,” says Alan Pisarski, author of “Commuting in America,” a book series tracking the nation’s ...