Yeh the chassis etc is all very formula 3 so that's easy. The motor at the moment is a sealed unit, serviced by McLaren. The same for the battery that's sealed and serviced by Williams.
I think we'll be producing our own motors over the next year, but at the moment the rules are that you have to use the standard unit.
Running the car is ok, it takes 15 mins to cool down to a temperature at which it will charge, and then around 45 mins to reach 100% depending on the state of charge at the end of the run.
Means loads of time for tea!! Until each driver has two cars, then it'll be just like normal testing, which is limited by tyres!!