Foreign oil dependency: Security versus profits

So, we know that America's current electric grid could handle the power demands of converting conventional automobiles into plug-in hybrid vehicles. We know that such a move would reduce pollution. We know that using advanced carbon-fibers could produce 50 percent lighter vehicles that are stronger than today's vehicles. We know that adding plug-in hybrid technology to such vehicles would produce super strong, super fuel efficient automobiles capable of ending foreign oil dependency and drastically reducing all forms of pollution.

The only thing we don't know is, are such vehicles profitable to automakers? While it is a sad commentary on society that health and security are bean-counted against profitability, that is today's reality.

Still, wouldn't funding an automotive revolution via advanced technology be a worthy investment for government via less military protection of oil, for automakers via retooling their entire operations in state of the art technology geared for the future, and for consumers via increased fuel savings and security?

Why not spawn the next great revolution in human history?