OK, here goes. I am NOT an ardent admirer of this genre. But, several (!) of my friends from high school have devoted their lives to RV's of various stripes. I dunno why, but I've heard them extolling the virtues of various types for longer than you've been alive M'Lord. So, here are my comments...
the higher end market is usually underestimated, it seems to me. A big factor in resistance is having a giant truck as base. My friends from OZ, the Nordics and Germany are Sprinter/Transit advocates depending on their brand preferences.
Now, as commented about, having every RV park in the world with decent L2 A/c of one stripe or another plus the pretty easy build of a Tesla semi based vehicle I'll argue you can do wonders, for a handful of reasons:
1. Effective range of ~400 miles or more will pretty much cover almost any RV driver. Many of the vehicles now sold have similar ranges. The. ability to charge overnight plus use Super/Mega Chargers makes this pretty painless. I strongly suspect you'll have no problem having Tesla provide multiple native charging capabilities (a la Tesla China) so carrying adapters would not need to be an issue. After all there's lots of spare space, and cosmetics aren't a big deal.
2. Aerodynamics can be excellent because of the seamless installation, assuming you have decent engineering talent.
3. The built in sensors can easily be tuned to provide unequalled vision and whatever automation levels appear.
4. if you order, say, 100 LR Semi, Tesla will be inclined to cooperate. After all they do know what the truck market is about.
5. There must be a fair number of fleet RV rental outfits that will happily be customers.
However:
1. This is a BIG vehicle.
2. By the time it's done it'll cost at least $400,000. Not a deal breaker but is a market limiter.
3. There's roughly three years of design, prep and Tesla-time to cope with.
4. The capital costs will be high for an unknown potential.
In penultimate conclusion, there are few BEV markets for which the normal natural stopover locations are already equipped with some type of 'refuelling' capability. Of course there are many questions. IMHO, this idea simply will work.
In ultimate conclusion, if you cannot convince Jenny don't do it. Five startups I did with Gina. Several others she nixed. She has a family background with lots of startups, so I am predisposed to trust her. Such ventures require dedicated family attention when one has a family.
This one is very high risk with weirdly high rewards too. You've never been impeded by excess timidity, so don't start now!