Functions:
- Remote-controlled steering and rear wheel drive
- Live axle front and rear suspension
- Spare tire manual unload mechanism
Worth mentioning aspects:
- It's RWD with a gearless 1:1 ratio.
- Reasonable ground clearance for its size and type of vehicle (3 studs).
- The batteries can be easily swapped from below.
- The hub button can be pressed by pushing the driver's seat.
- The mechanism to unload the spare tire needs to be manually unlocked, it then
slides down on its own.
More info, a video and the building instructions are all available at rebrickable
https://reb.li/m/166698