This is an interesting point that I haven't considered. I hate electronic nannies and I don't need the car to tell me how to drive it. So I've kept PDA off ever since I got the car. Does this mean the car doesn't do any regen when coasting? And the only regen I get is through braking? That could be why my battery has never reached more than half charge. But on the other hand, with PDA off, I've had very smooth braking and ICE-like coasting. I live in a flat area, so downhill engine braking is not really a concern for me.