I should have posted this sooner, but thank goodness the car was totally taken care of. We were able to pick it up that afternoon...no charge, no hassle!
While it did cost us a good amount of stress that evening and the next day, at least it didn't cost us any $$$.
I guess they had to change the gear shift housing??? Something went crazy with it which caused it to shut down the battery, which shut down all of the electrical features, which is pretty much the whole car. Oh well, it's done and fixed. Time to move on!