Diane Berger has a Chevy Volt plug-in hybrid with green carpool stickers that allow her to legally drive solo in California diamond lanes. But as the software engineer commutes from the East San Jose ...

All good things must come to an end, and so it is with the green stickers that give plug-in hybrid drivers access to California's freeway carpool lanes with just one person in the car. A total of ...

One of the major incentives for buying a plug-in electric car in California is the coveted sticker allowing single-occupant travel in the carpool lanes on the state's crowded freeways. Now, the supply ...

You've seen those cars with the HOV access stickers cruising down the carpool lane with only a driver inside -- their time is almost up. John O'Dell has been covering green and alternative fuel cars ...