Source? Supposedly the F-150 Lightning numbers are including 1000 lbs of cargo. So a full cabin of people still supposedly getting the stated 300 miles on a full charge (For the extended range.)
"Applying these results to the F-150 means that towing a modest trailer would put the highway range at roughly 100 to 125 miles, depending on the pack. Towing anywhere near the 10,000-pound maximum rating on XLT and Lariat models (with the maximum trailer tow package and extended-range battery) at highway speeds, we believe you'd be hard pressed to exceed double-digit miles."
Now compare that to the LandCruiser that we haul race cars with… the LC always gets 14 mpg, we have filled it with 6 adults going to Tahoe, same MPG. Haul a 2700lbs sports car. Doesn’t change at all.
Honestly an EV would be nice for hauling stuff to the track, hopefully with the race car, and equipment it can make it to Willows on a single charge, at least the track has RV hookup points, can charge while you race.
This is physically impossible unless the LandCruiser is just throwing energy away when empty.
What's more likely is that this estimate is not very precise.
Of course we are talking about towing a light sports car here. Tow a different type off trailer, or a very heavy load and the losses will start to catch up.