This is very impressive. One of the main criticisms of
Electric cars is the issue of battery degradation. This is something we all experience with our cell phones. Over time and repeated charge/discharge cycles the lithium-ion cells begin to degrade and do not hold their charges.
However it seems that Tesla has hit a really good design with its battery tech. 420,000 miles is amazing. Of course some ICE powered vehicles hit this mark but it’s usually on its second engine and it’s second transmission by this time. These Teslas are on their original engines and battery packs. That is amazing.