Exactly. If you can throw 2 battery packs into the semi, it can be charged twice as fast as a Tesla car without doing anything else. The actual equation (miles/

Exactly. If you can throw 2 battery packs into the semi, it can be charged twice as fast as a Tesla car without doing anything else. The actual equation (miles/minute) has a few variables (mileage of semi, weight, charge curves), but the conclusion seems to be that it would charge really fast. I don't think they're going to bother with swapping.