Am I correct in assuming that even on an indicated 'zero' battery level, if you put the car on a rolling road you will still achieve ~204PS
Until I started reading these threads, I was also under the impression once the battery was almost empty it was game over, and you would come crashing back down to earth with 150PS until the battery was charged to a certain level.
I don't have one and am not fortunate enough to have got to play with one - but from my understanding of it, here is a simplified analogy -
It's not a phone (bear with me)
When the phone's battery is dead, it doesn't turn on and you can't make a call
PHEVs are more akin to the following analogy-
Oh my phone is down to 5% battery, I better turn it off in case I need to make a call, until I can charge it.
Except the car does the "turn off" behind the scenes and a "call" is use full power.
The car also has the added benefit of charging of the internal combustion engine rather than being limited to a socket, again the car will do that behind the scenes when you are cruising at constant speed via the alternator, or when braking via regen to keep a minimal charge in the batteries.
Or you can change to charge mode and it will run the electric motor "backwards" as a generator and burn extra petrol to recharge the batteries - so you can run in EV mode in a low emission zone (for example).