Pulling a trailer and losing travel distance is a problem all vehicles face no matter the fuel used. Consumer trucks can put in skip tanks in the truck that adds fuel capacity from 30 Gallons to 100 Gallons. I like adding range to CT but the cost and added weight to the trailer plus complexity of a added drive system to a trailer. If I wanted more range out of CT I would get the tri motor. Spend less money, trailer is much lighter and less maintenance, less things to go wrong. I want to add another thought here the RV industry has a really bad record for customer satisfaction. If you expect excellence from Tesla, the rv industry will leave you very unhappy, I have owned enough of them, plus do a search for RV problems and it's very sad what happens to good people. I had a class C motorhome with a 26 gallon tank my safe range was 200 miles and drive right to the fuel station. I wanted more range and unless I wanted to reengineer the fuel system it just was not worth it. The CT is where I would put all my money, you get more range and it's easier to take care of and let's say it's not enough it, you can sell CT. I would think Tesla will always improve CT. I am not say putting battery pack, drive axle, motor inverter and controller with a on board charger would not work but for the money ,investing in more CT.....but I did not read which Cybertruck you were thinking of?
I'm pretty sure the Teslas have inertial sensors at least linear ones and possibly rotational too but I cannot state that as a fact. With these it would be able to estimate the mass of the vehicle based on torque and acceleration measurements. A simple strain gauge (or gauges) in the hitch would allow the onboard computer to make estimates of trailer mass as well. I believe the basic towing mode features will be improved range estimates with trailers based not just on past consumption and sway reduction through rear wheel torque vectoring. But we'll have to wait and see about this. All just conjecture on my part at this point.
In the current versions trailer mode disables some autopilot functions.
There's a whole segment of the trucking industry referred to as "partial load" or something like that. This is for applications such as moving product between warehouses or to distribution centers. It is assumed that the Semi will preferrentially serve this segment rather than the long distance hauling part. But there is a simple solution to serving the long haul market too. That's what I call the Pony Express model. The Semi runs however far it can with a full load and arrives at a service center either operated by the truck line or someone else. There he unhitches the tractor and hitches a fully charged one to the load and is on his way in a few minutes.
OK, I think I found the industry term to what I described.
Also a motor in trailer gives chance to recover energy from braking & reduce brake wear.
Well, we can use a big windup spring traction motor instead for this example.
