Plug-In Hybrids: More Hype Than Hope?

Plug-In Hybrids: More Hype Than Hope?: "EV advocates are quick to note the Prius wasn't designed to be a plug-in hybrid, and in fact makes a lousy one. The biggest problem is the electric motor is too small, so the car relies more heavily on the gasoline engine. Cars designed from the ground up to be plug-in hybrids, like the plug-in Prius that Toyota is working on or the Saturn Vue plug-in – will almost certainly offer far better fuel efficiency."