Fully electric RV, diesel generator, RV of the future?

I dont mean to burst any bubbles here, but the concept is nearly a century old already and 70 years in actual service. As already mentioned...diesel locomotives and even the Chevy Volt.

Sure you can argue specifics, but the general tech is exactly what is being discussed here.

There are many reasons this has not gone mainstream, especially in the big truck world. Too much to get into here. There is a ton of information on the subject if you use the right keywords and spend time digging.