After driving in the rain, I noticed that the carpets of the car (both driver and passenger, front and rear) were soaked with water. Needed a shop-vac to suck all the water out and left windows cracked in the sun to help evaporate water. I assumed it was user error, putting a wet umbrella onto the carpet. The amount of water I vacuumed could not possibly come from a single umbrella. Car could sit in the rain (with the windows up and sealed, I triple checked) and water would still make its way into the interior, even without opening either door.

Car STILL remains at the dealership after a month, no solution has been reported.