Electric vehicles are getting plenty of buzz, but will consumers actually be willing to trade their gas guzzlers for a battery-powered auto? Andrea Kissack takes a test-drive in a Nissan Leaf, and writes that she loves the ride -- but worries that running the radio and the windscreen wipers will drain the battery before she reaches the next charging station. "It's a wild feeling driving without a tailpipe," she notes. "But there's a downside. ... I don't want to run out of juice and be stranded by the side of the road."