I keep going back and forth on the Smart Air Suspension (SAS) option. I placed an order for an 85 (not P85D) last Wednesday which means sometime today (Wed 25th) I'll be hearing from someone to confirm my order. Right now SAS is not included in the order. But I don't want to look back later and wish I'd added it. But I also don't want to pay $2+k for something I'll later figure I should not have. FYI I have included the Tech Package. Also, is SAS what raises and lowers the car several cm as shown at 2:17 in this video? Tesla Model S Customer Stories - Winter Driving in Norway - YouTube I can see where that would be handy. Any thoughts? Is SAS really worth it? Many thanks!