Thanks for all the postings folks!
mark9207 I’m pretty sure you nailed it on the head: The rear and front windshields had been getting foggy so we ran the defrost for a good long while as we drove the car around the lot. After seeing the drip I did some reading online and did find some stuff about how running a/c could cause a condensation drip to occur but, since I hadn’t been using a/c, I didn’t see how that applied in my context. From what you say it looks like running the defrost can cause the same type of drip as the a/c would have so I’m going to chalk it up to that one for now unless it continues. If other weirdness turns up I will definitely take it back in to the dealership but so far it’s actually been a really great car. Plus the dealership is about 50 miles away 
Lastly, thanks again to everybody for all the help. This was my first post on CarTalk and I was very pleased with the response. I’ll definitely be sleeping easier tonight 