The faster you tow an Airstream or any other Travel Trailer, they become less efficient.
Aircraft are not designed using the Airstream shape as an example. Your tow vehicle as well. Howard Hughes and the Spruce Goose... is a starting point. A 'flying boat'... and towing an Aluminum boat, of sorts. One floats. The other not so well.
Electric Vehicles are not advised for towing. You will be stopping so often, your vacation will be spent at Charging Stations. My neighbor with his Tesla and Free Charging... understands.
If you bought an Airstream to save the World... you didn't. Had you continued to tent camped, you saved more energy and gasoline.
Many new buyers are concerned about the environment. That is good. Saying the Airstream is on the cutting edge of being towed with an EV... well, if it were smaller. Sixteen foot Bambi's are a good Airstream to save the environment. An EV vehicle could probably handle it... too.
Lithium Batteries also do not save Energy. To resource the contents, produce and recharge them... lots of hidden environmental production issues. They do not advertise that... for good reason.
E=MC2... a nuclear powered vehicle? Figure the cost to put that together. Ask the Iranians.
Great feel good advertisement. I knew I was not saving the planet buying an Airstream. Or a home. Or a tow vehicle... or feeding ourselves... or.... on and on. There is a cost for the environment just stepping outside our homes and inhaling the air, as mixed as it can. We exhale CO2 and the Plants use it and O2 is their waste product.
That Can of Corn... work on that alone. Build a Tin Can Trailer?
Saving the environment Winter Camping in Minnesota? As long as you do not heat your Airstream and not expect to digest frozen water and food without discomfort.
Want to conserve energy? Get the largest tow vehicle that will tow your length of trailer. Too small a tow vehicle uses more energy. Shorter Airstream, smaller tow vehicle. Even rocket development required larger engines, more of them to get into Space. You will if you want any Airstream over 16 feet.
I sure enjoy our Airstream. Had I been concerned about the Environment, Energy Use, Tow Vehicle exhaust, Road construction, Bridges, Tires, Aluminum... I would step into my Cave, not have a campfire in the Winter and make my tools from Flint and Ground Stone.
There is a cost for anything we do. The Geological Record has a list of Extinctions that would fill a Library... but that is Nature. Once we consume everything... something else will take our place. That may take millions of years... but it will happen.
Maybe I am an optimist. Paleontology is scary if you just look at the illustrations. I am an example... bad timing for me.
**** This has not been edited nor proofread by a Human Bean.****
That is why it may be accurate. Just saying....