LAS VEGAS GOES ELECTRIC AND SAN FRANCISCO IS A GAS
Vegas visitors can now rent no-emission electric cars for cruising the Strip, and they run a relatively whopping 100 miles without recharging. $60 for four hours, $95 per day; (702) 734-3422

Electric cars have been a bust on the hills of San Francisco. But you can rent a gas-powered Scootcar, a multiwheeled buggy perfect for breezing around the bay. $33 per hour, $120 per day; (415) 567-7994, www.funtechscootcar.com