The original purpose of Fiberglass trailers was to allow RV travel without oversized Tow Vehicles. The trailers were mostly 13fters then.
I love my 13 Scamp which has every feature of it's larger siblings,yet can still be towed with my 4CYL Escape.
While I am not allowed to explore the reasons for the present trend in the price of fuel, I think it should still be acceptable to say that it is beyond the control of the average person alone, and the majority has misplaced it's trust.
That being said,those of us who have taken the most frugal approach should be the last to park our Travel Trailers, and so reap the benefits of less crowded campgrounds, and less crowded destinations. At least until travel is further stifled by the questionable choices of those in power, who have no personal incentive to economize.
Platitudes and false empathy are no substitute for leadership.
Even with a network of charging stations it's an issue. The best range is about 100 miles, and that's not towing. On top of that the time to charge is significant.
As well I just read an article on Lithion ion battereies. If you let them go to full discharge one time they are trash material. Interesting if you park your lithium ion car at the airport while on a 12 day trip the typical lithium ion battery powered car will self discharge sitting there and not be able to be recharged until you shell out for a new set of batteries. Apparantly the Tesla cars do this and beyond this, when discharged they can not be towed. Hard to believe but that's what the article claimed.
Yup there are issues but when one starts looking at Europe and quoting better gas mileage ratings they need to look at the fact that in Europe the general population is using smaller cars and less power than NA and in many cases alternative fuel. They are also not as inclined to travel the great distances we do to work as few feel they have to have the BIG house out in the burbs as those in NA seem to feel is a must have. It might shock a few to learn what the average sq footage of a home in England is compared to NA. So electric works for them. My neighbor uses an alternative fuel car to drive to and from his job for about 3 years now and he loves it. I dont like it as he can sneek up behind you if your out walking and you dont hear it!! Yup he has another vehicle that is used for towing but its not his daily ride.
In Europe folks tend to travel MUCH shorter distances.
Years ago, (when I lived in Winnipeg) I had some distant relatives arrive from England and they wanted to know if they could drive to Winnipeg from Toronto. (Sure, why not? Choice of routes, too!) Then they went on to ask if it might take more than 3 - 4 hours? (at speed limit, try several days!)
The distances were simply incomprehensible to them
Yes in Europe they use small, fuel-efficient cars - they can do it because they are not in 'em for than a couple of hours at a time.
If the "typical" person from Britain. the low countries, Scandanavia, etc were to drive from "Chicago to LA" (Route 66 music), whether towing or not, they soon see how it came to be that such sleds as a '66 Ford Galaxie became popular.
So, yes, folks drive smaller cars, smaller distances in smaller countries, with smaller fuel consumption per distance traveled. Not worth comparing to here - at least not for me. I refuse to serve time in a tiny, cramped tin can for 8-12 hours a day when I am supposed to be enjoying my time.
Give me a full-size 3/4 ton or 1-ton p/u as a tug and and enough trailer that I can relax in!