Going through this myself.
I LOVE my 5th wheel but the wife hates to drive my truck, with or without the rig.
The youngest is going off to college and empty nest is already getting to my wife. She wants to be able to take off on her own if I'm at work and go spend the weekend with the daughter.
So we have been looking around at different layouts and classes.
It will be a bit before we change but it will happen so I am reading every comment with interest.
You can run the gen down the road with no problems but I found this will not help on my Fuzion.
Last July 4th holiday we started out from Las Vegas heading to Lake Havasu City AZ. It was 114 in Vegas so I fired up the gen and both A/Cs to keep the camper cool. It was 76 degrees inside as I had been on shore plug running A/C at home.
When we got to Havasu it was 123 and when I went inside to set-up the rig it was 123. The Fuzion had allowed enough air thru itself on the road that it had lost all cooling that had been there.
Bottom line for me is running heat or A/C on the road is a waste of effort as the Fuzion doesn't insulate itself well enough.
I've got a Fuzion Touring Edition and have pulled it from Louisiana to California including Vegas. We ran the generator about an 1-11/2 hrs before we stopped for the night and the rig was nicely cool.
Not sure if your rig is just not sealed good or that it was just so extra hot outside that maybe it could not cool down.
Have had no issue with my Fuzion.