That's really not a factor. The most popular semi truck in America, the Cascadia, is rated for 52,000 lbs GVWR. Kenworth T680 has a 64,000 lbs GVWR. Both far

That's really not a factor. The most popular semi truck in America, the Cascadia, is rated for 52,000 lbs GVWR. Kenworth T680 has a 64,000 lbs GVWR. Both far short of the 80,000 lbs limit. The eCascadia has a 230 mile range on a 475 kWh battery. If you make that 1.5 MWh, it'll handle essentially any trip a single driver can make before his workday is over. A 1.5 MWh battery works out to ~17,500 lbs. Subtract the engine, exhaust, and fuel weight from those trucks and the majority of tractor trailers on the road will still be under the legal weight limit. The largest factor is the lack of charging (detouring to hit a charger is very costly) and the cost of batteries that size.