http://www.kqed.org/.stream/anon/radio/quest/2011/06/2011-06-20-quest.mp3
At the end of this month, some hybrid drivers will lose their solo carpool privileges. Beginning July 1, only drivers of all-electric and natural gas powered cars will be allowed to drive alone in California's carpool lanes. How effective was the hybrid perk and what will be the new wave of fuel efficient hybrids that gets this special benefit?