On July first – the carpool lane privileges hybrid vehicle drivers have enjoyed for years will come to a screeching halt. That’s the day the yellow access stickers on California’s hybrid cars expire for good. State officials describe the program as a huge success that helped convince drivers to give hybrids a try. Now they hope a similar sticker will do the same for electric cars. But many drivers doubt that plug-ins can catch on. Sanden Totten reports.