The recent German article that reports that one owner's Roadster is getting only 100 km of range after going 150k miles is highly concerning for me. Cinergi's Roadster over a 2 year period driving a total of 20k miles decreased from 188 miles to 181 miles in range (standard charging). This is about a 4% decrease (or 2% / year or 1% / 5k miles, etc). My opinion is that this rate is a moderate amount. My question is if anyone knows the answer: What does the battery degradation curve look like? 1, 2, or 3 below? I.e. is battery degradation linear or "curvilinear" (I think that's the term?)? (If I had to guess, I guess it would be number 3). I'm sure enough research has been done that one can estimate range after X amount of driving with average charging habits. Even if basing off Roadster doesn't exactly apply to Model S due to different technology, I'd still like to try to know what kind of range I can expect after say 50k and 100k miles. I prefer answers that are realistic and not Tesla hype, sugar-coated, or "best case" scenarios. Thanks in advance.