With regard to freeway passing acceleration of the P85 vs the P85D, no I have no data. When I test drove a P85D service loaner about 3 weeks ago, I just felt it was ever so slightly sluggish compared to my P85 on freeway accelerations (ie. starting at 70 mph and going up from there). When I returned the loaner, the service guy said that the P85 was better at freeway acceleration. Now he might have just been trying to make me feel good about my car, I don't know. And software updates keep happening to the P85D, so who knows.