Personally I am very exited about it but we lack data that does allow us to do proper TCO comparison of ICE vs EV on the heavy duty side. Also how does V2G economics actually work if you are trying to optimize for the lowest charging rate (usually during night to avoid peak)? If you are in V2G mode after 6 pm i assume you would need to start charging at night during cheapest rates and assure that the bus is charged by 5 am. Wouldn't this require 1 to 1 charger to bus ratio as you might not have enough time to swap? Wouldn't then infrastructure costs(chargers that are build and concrete around it) skyrocket?