I currently own a 2021 Model Y LR AWD and have both, a Model X Plaid and Cybertruck on order. I expect my Model X between summer and fall. Due to the currently high gas prices, I'm planning on selling my Model Y at the peak of the gas price craze as I can potentially get more money for it before gas prices come down and Austin production cranks up and reduces wait times for Model Y. So, I will be without a current Tesla with 2 Teslas on order. Now, before the referral program ended, I got some referrals with one of them who has not taken delivery yet. So, what happens to those miles if I don't have a Tesla at the time that the referred buyer takes delivery? Is it possible to use them on the Model X Plaid which I'll get a couple months later or do I lose them?