More complications: Our next Model X lease payment is due Dec 26th, so returning the car before then is different than returning after. I'm assuming each month that goes by reduces the early termination costs, so it might pay to wait until Jan to return the X. We're under our mileage allotment for the X, so adding a 1,000 mile road trip won't hurt, whereas starting with a 1,000 miles on the Gravity may affect us later.
And then my wife just scraped the bottom right corner, damaging some the of the plastic trim, so that will either have to get fixed or deducted when we return the X.
Sigh, nothing's ever easy, eh?