In that video, the guy with the 5er was not supposed to be on that road. I've not been there but from what I understand there are signs warning that no large vehicles are permitted. It's not always the length but oftentimes the height as well....low bridges, etc.
Last year I was following Google directions to a CG I had never been to, and I could see ahead that the county road I was on took me right into the middle of town, where the asphalt was turning to bricks. I couldn't see that far ahead but saw the sign that said "NO TRUCKS". It didn't say why, so it could have been low clearance, too narrow, turns too sharp, etc. So I turned off on a side road and wound up in a residential neighborhood, which wasn't much fun either. I was able to flag down a cop who steered me back to the road I was looking for. She asked me why I was in the neighborhood, and I explained that I turned when I saw the "no trucks" sign....she said that was only there to cut down on traffic and that there were no restrictions that would prevented me from going downtown....but there was no way for me to know that.
This guy made it OK but it could have ended badly for him also....
To your original question, neither option you mentioned would be good in these extreme cases...your best option may be your original plan, and as jmtandem says, park the Newmar in a local CG and take the toad into the park.
Length had nothing to do with
this guy getting stuck....
