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 ...

The state is close to handing out its last green carpool decal, which allow solo drivers in plug-in hybrid vehicles to ride in high-occupancy lanes. Current policy allows all plug-in cars the perk, ...

Solo carpool-lane access has proven to be one of the most effective tools to get California drivers to buy plug-in electric cars. But soon new drivers of plug-in hybrids in the Golden State may no ...