Eco-diesel

I don't know where the idea comes from that replacing the batteries in a hybrid is expensive, its not. I can replace the battery in my Prius for less than what your dealer is telling you the cost in the Ram is. Assuming I ever have to replace the whole thing. Most people get well over 200k miles out of theirs, and then usually its only a couple of cells that go bad. Its only a 1.5kwh battery after all. 

The drivetrain itself is bulletproof, the electric motors (there are 2) are integrated into the planetary drive to create a continuously variable transmission that never changes gears and babies the gas engine, so it also lasts for a really long time. Depending on how each of the motors' field coils are supplied they can act in forward, reverse, as motors, as generators, or both.   Truly an awesome piece of tech, take a look on youtube for an explanation of how it works sometime. There's a reason that most of the taxis you see today are Prii, those guys regularly get 400k miles out of them without overhauls or battery replacements. 

Full ev batteries would cost a lot more to replace because they're much larger, but they're Li Ion and last forever, as long as they are actively cooled and heated, like in the Volt, Bolt, and Tesla. The Nissan leaf gave evs a bad rep originally because in their rush to be first to market they didn't put in effective temp management and had some failures in AZ and other hot places. Even if you have to replace your ev batteries you can buy used ones from a salvage place, the cars are wrecking out a lot faster than they're failing mechanically so there are plenty available. 

https://www.youtube.com/watch?v=Ii98Vb5KdIA