Every time that you change energy from one to another - there is loss, typically shows up as heat.   So you will lose energy at the gen set, likely at the battery, at the power amp, and again at the wheel motor(s).     .

I had the 2024 GMC 2500 AT4X and now have the 2025 GMC 2500 AT4X both with the 6.6 gas.  No issues with plugs or oil in either.

Similar tech for big rigs   https://edisonmotors.ca/  

More efficient use of power also.  No power loss through transmission.    

I would love it if Toyota would make a proper 3/4 ton