One of the things you have to do to setup a 4X4 for deep wading is extending the breathers for the diffs, transfer case, and transmission up above your target depth; that and a snorkel to move the air intake up.
For the Cybertruck, since the compressor is already running to keep the air...
I had an idea for mounting a tent that would work well as a lumber rack also:
https://www.cybertruckownersclub.com/forum/threads/cyber-camper-concept-for-cybertruck.779/page-4#post-38543
Little hard to describe but I want a rack I can mount any standard Roof-Top Tent to, which I can tuck down for transport. It'll add some drag, and probably block the rearview camera (but welcome to having a camper)
A Pop Up Tent, Pop Up Rack: