When I got to where they explained the benefits of having the engine at the very back and the instability of having the back part push the front, I tried to guess how they solved it. I guessed a fancy drive shaft with universal joints so the engine in the back half could drive wheels in the front half.

I guessed wrong. I still like my idea, but their solution is simpler and probably more efficient and more durable too.

A more modern solution would be to use electric motors on multiple axles, the power coming from a generator or battery.

I wonder how much extra complexity a driveshaft crossing the articulation joint would introduce