For truck+trailer combinations above a certain weight, that stops helping much, because the amount of batteries you need to add ends up adding enough of their own weight to counteract much of the range benefit. Will the limits improve with time? Sure. But I don’t know whether it will ever be feasible to get a good range for a battery electric truck towing a trailer. For large commercial trucks, battery electric is unlikely to ever make sense for any battery chemistry - that’s one of the main reasons to expect fuel cells to still have a substantial future in transportation (Which is still a path towards clean transportation, even if we start out with using blue hydrogen and only gradually switch over to renewable-powered electrolysis or whatever). And if we end up having to build out the infrastructure for that anyway it’s probably going to make sense for many people to have that option for their non-commercial trucks.
Still, I’m very glad to see electric truck options coming out. There are a lot of people who could get everything they need out of something like this.
Edit to add: FWIW, when towing longer distances, even with a gas vehicle, I see 80- 100 miles remaining range as the point where I need to find a place to stop and refuel, because in much of the country it’s not uncommon to be 50 miles from the next gas station (or at least, the next one where I can comfortably maneuver a truck and trailer).
