>Yes, it's less effecient if you're actually using the engine but the aim would be to not use the engine, and purely use battery storage as much as possible. Y

>Yes, it's less effecient if you're actually using the engine but the aim would be to not use the engine, and purely use battery storage as much as possible. Yes, but a parallel hybrid powertrain like Toyota's shouldn't be any worse here. The Prius also has a plug-in version which can run on battery alone for a certain distance, and it only spins up the engine when needed for more power or because the battery is too low. Of course, the Prius doesn't have the Volt's all-electric range, but it also has a much smaller battery (and lower price).