5198x originally Sep 12 @ 3PM from 1+ months and now late Sep .
I have somebody picking my old car, insurance, cash and all planned but ..........
Talk to your DS as soon as possible. Rumor has it they may be able to help you out in such situations. Insurance is ok to wait, and I assume the cash is ok for two weeks, albeit annoying for you. If they can get you a rental car or loaner or something, that would greatly help you. Make sure to phrase it as "I've already committed to selling my car, and now I'm going to be without a car for a week and I'll have to rent one".