I've been pretty frustrated with the slow adoption of EV and PHEVs for large trucks. EV drivetrains are so much better suited to heavy trucks for everything bu

I've been pretty frustrated with the slow adoption of EV and PHEVs for large trucks. EV drivetrains are so much better suited to heavy trucks for everything but range (thus... the hybrid). The insane torque they can deliver, the energy recovery in braking, simply is a revolution for them. The Tesla demo showed that being barely able to go up a mountain is a thing of the past with an EV drivetrain. I had to drive an RV with a friend over the Appalachans, and then the constant undulating foothills of the eastern midwest. What is especially annoying is the automatic transmission can't handle the climbs without careful metering of torque by the driver, otherwise it does a loud and jerky downshift. EV drivetrains would have none of that. The range? Put a generator onboard. For RVs they already have one in most cases. The stability of the entire system would be enhanced with floor batteries. interior and storage space would improve. You have a huge room for solar cells, and for RVs, the roll-out sunshade could be further solar cell real estate. The weight issue will improve with density. Sulfur, solid state, and semi-solid state are in the wings. But again, a hybrid drivetrain would reduce the amount of batteries needed and improve range. We should have mandated the development of hybrid drivetrains in all wheeled transport two decades ago, which is five years after the Insight and Prius hit the market.