Submitted: Jul 23, 2008 - SAN JOSE, Calif. - Plug-in hybrids are a great way to ease our oil addiction and do something about global warming. But it's taken 10 years for conventional hybrids like the iconic Toyota Prius to eke out almost 3 percent of the domestic market, and nothing suggests cars with cords will take hold any faster.

For that reason, plug-in advocates say, we've got to figure out how to start…