The top car is a 1956 Astra-Gnome concept car (never actually manufactured for us). Photo credit / more info: https://www.petersen.org/vehicle-spotlights/1956-astra-gnome
The bottom vehicle is a dumpster sold by a wanker.
Any specific reason for the 2 separate engines?
What's the advantage?
All I can think of is that you might be running a much lower powered, single engine when not in 4WD mode.