I hope you got a really good price for it, because you could be waiting for months.
While the Tesla trad-in may not be the best price, it is pretty close to the easiest (and can help reduce taxes). Other companies like Carmax and Carvana seem to give some pretty good deals and will pickup your car when you are ready for them to do so.
I know that suggestions don't help you, but will maybe others.
There have been numerous instances over the years where people have ordered a car and sold it, only to get stuck without a car for up to a few months.