Ah, sorry. "ISTR" is "I seem to recall". The 60% number is, as you now see, just my recollection. If I can put my finger on a reference later, I will. Similarly, where did the 85% number come from? Seems very optimistic. Oh, and what is this "Tesla Chip"? Googling it just gives a lot of articles about Tesla's in-house ASIC development.