The bigger the battery - the less cargo it can haul. Another huge disadvantage. Inefficient fuel, inefficient cargo space, long recharge down time.
Yes less weight, but will a trailer full of potato chips be near that limit?
Tesla says the Semi has three times the power of a diesel truck, though with the efficiency of using less than 2 kWh of energy per mile.
The energy costs for a heavy 3-phase user are about one-third the residential user and the equipment uses LESS copper...
—”What is the re-charge time?”
Does not sound like you can do this at home with an extension cord.
“How long does it take to charge a Semi Tesla? Tesla, Inc. The company initially announced that the truck would have a 500-mile range on a full charge and with its new batteries it would be able to run for 400 miles (650 km) after an 80% charge in 30 minutes using a solar-powered “Tesla Megacharger” charging station.”
https://en.wikipedia.org/wiki/Tesla_Semi
That said, if you believe it is all BS, sell Tsla short!
THERE ARE MANY THAT WENT THAT ROUTE...
GOT A HUNCH, BUY A BUNCH!