TFL hooked a Model X up to a trailer and it basically reduced the range to a joke
In any case, from 500 miles with 10% degradation, 10% reservation, and 50% inefficiency due to towing you're still going to get 200 miles. Most superchargers are within 50-100 miles of each other. Ezpz.
At 250 miles with those same metrics, you're at 100 miles of range. Sure you don't want to go cross country but you can make the haul if you want to.
The biggest problem is going to be trucks with trailers hogging the whole bank of chargers so they don't have to detach their trailer.
They were bitching that it's so inconvenient because they thought you have to use the app. That's seems disingenuous t me.