Is Trouble on the Way for Elon Musk and Tesla?: Video - Bloomberg The above link is a disappointing analysis. I can't believe Elon said he tries NOT to drive the Roadster in order to preserve battery life! I was planning on using the Model S every single day of my life for the next 8 yrs. If anyone here is a Roadster owner, can you please share: 1) The number of miles you have driven in your Roadster 2) The approximate decrease in driving range (in percent, if possible) due to battery degradation? i.e. 50k miles driven, 15% decrease in range. I understand that the battery performance of the Model S may not be the same as that of the Roadster, but it's all I have to compare at this time. Thank you.