I don't understand why Tesla still is not starting car insurance business. This has been discussed many times in the past. With one accident every 2 million miles, the combined rate (payout: premium) could be as low as 30%. Most insurance businesses have combined rate of 98~110%. This would force other companies to reduce premium on Tesla cars, but they can't compete because Tesla knows the cars and drivers better, and Tesla can fix the cars in their own shops, real vertical integration. This would benefit car owners too. From insurance business alone, I estimate Tesla can earn $500 from each car per year. That's about $8k (with investment gain) on each car in 10 years, $8B profit from every 1 million cars.