Have any of the high mileage users, or others had occasion to have had to replace their high voltage batteries? I'm just curious. I remember that the original warranty was for 100,000 miles on the batteries and I've exceeded that in my 4 years ownership. So I was just wondering if this is something I should start planning for or if the actual usage lifespan should well exceed that number. My feeling is that one should see an increase of the charge/discharge cycles or decrease in the length of EV usage that should be noticeable when they reach their end of life cycle. But, I really don't know. So I'm just posing the question.