People keep saying this, but it makes no sense. It is only considering the buyer's motivation, not the seller's. Why would Tesla prefer to sell a car now for $7.5k less than they'll supposedly get in one week?
If they really believe they can sell the car without a discount in a week, it's basically like a loan with 10%/week interest rate. That can't make sense. So either they don't believe they can sell that car for the full price in a weekend, or they are desperate to juice their Q4 numbers.