So I just picked up a Low Mile 2018 P100D Model S (Build Date was 5/23/18) I was looking at the Window Sticker and happy to see it was purchased with the High Amperage Charge Upgrade (72), The next option I thought might be a gimmick . Any other owners have the Battery Range Upgrade? I was blown away when I was SC the car this evening. I didn't charge to 100% but the range was already exceeding 340 Miles. I think that is pretty amazing! Especially when I was fully prepared for 315 Max Range. Anyone else have some insight on this option and what in fact it actually does for the Car?