Making an electric RV might be easier (more practical) than we’ve been thinking. It doesn’t have to be solar powered, it could be an electric van conversion. It would be heavier than a normal passenger van, so it wouldn’t have as much range, but that might not be as big a problem as it would first seem. The places we like to camp most are state parks. Many state parks have campgrounds suitable for RVs. They don’t all have full hookups, but they all have an electric post and most of those have 50 amp service. So a person, or family, could go from state park to state park and plug in at night to run their utilities and recharge their batteries. Maybe the original electric passenger van has a 200 to 250 mile range. The heavier RV conversion van might only have a 150 to 200 mile range. But we know from experience that there are a lot of state parks no further apart than 150 to 200 miles. If there were a gap between parks larger than that, there are plenty of commercial parks in-between, and they all have 50 amp service. If a person were not in a hurry to cover a lot of miles every day, they could do a lot of camping without ever having to stop to recharge (on the ever expanding grid of charging stations).
Smaller all-electric RVs could be developed right now. And all we need is one more generation of battery technology and that 200 mile range becomes 400 miles, and larger RVs become more practical too.