You are correct, 50-55% is what I've normally paid on vehicles. I think the biggest thing that kills the residual is Tesla's strategy of reducing the price of vehicles. I don't know of any other manufacturer that uses that strategy. For example. I have a refreshed LR MS, that is coming up on its' 36 month end in August. Over the last 18 months or so, I've watched the early lease termination go from the lowest (about 18 months ago) ~$2,500 to the latest $10,968. I only have 5 months left, it would be cheaper to pay the remaining payments. When they reduce the price the early lease termination shot up, as it should - since you can now purchase a Plaid Model S for not far off of my LR.