Caffeine:
One estimate I’ve seen for the weight of a 700 kWh battery pack for the Tesla Semi is 10,000 lb. The same source gives the weight of a diesel engine, gearbox and full tank of fuel as about 5000 lb. So from that the Tesla Semi loses 5,000 lb of payload. But an electric vehicle doesn’t have an exhaust system or a large capacity cooling system, which is a bit more weight saved. Although the Tesla Semi doesn’t have differentials, it does have 4 electric motors, so probably no weight saving in that department.Presumably there will be a shorter range option for the Tesla, with a smaller battery. That could have a similar tare weight to a diesel, even if its range is considerably less.
Having a lower payload capacity might rule the Tesla out from some applications, but in others it might still be cheaper to run per ton/mile than a diesel truck even with slightly less payload.
Those figures are as believable as the 2 kwh per mile figure.When it seems clear that a 700 kwh battery isn’t going to get anyone very far at all based on the maths of 1 gallon of diesel, containing around 48 kwh,needed to move a truck 9 miles.
Whether with or without KERS.
As for a 10,000 lb 700 kwh battery strange how all the might of Mercedes can’t get close to that figure.Their figures stating more like almost 200 kgs for 50 kwh.So 190 kgs x 350 = ?. 
greenoptimistic.com/bosch-el … hQcnzdpHIU
As for so called ‘Greens’ wanting to make the transport sector reliant on dangerous anything but green nuclear energy.You couldn’t make it up. 
