They could do it that way. I was thinking 4 separate sub packs and a commonized charger sitting between the charge port and sub-packs. On the 3, the extra electricity electronics live above the cells under the rear seat. The semi doesn't have that space so it would cut into battery capacity to integrate them. Also makes replacement of the charger more costly. Also only need 1 or 2 12V converters and such. A 480V 3 phase @ 50 A AC connection would give a 500kWh charge overnight, that might be handy for a company with more locations than trucks.