Okay, so I currently have a 2013 P85 (specs in sig or HERE: Mint Condition P85 with LOW MILAGE (7,800mi) - $72,000 OBO) and I want to trade up to a car with autopilot - I tested it yesterday and now I'm hooked :love:!!!!! The only thing is, when comparing the P85D and the 85D, the $30,000 difference is pretty big, especially for shaving off a second for the 0-60 time.... But here's my real question, my current car does 60 in 3.9 seconds (85D does it in 4.2), how much will I really notice the .3 second difference between my existing Model S and the 85D I'd most likely upgrade to? Was anyone else in a similar situation? Thank you in advance and Happy Holidays!