could be your rear brakes - on my 2010 they wouldn't release. took a few times of setting the ER brake and releasing then backing up a few feet to get it to break free.
I think it would have been faster to remove the rear wheels and adjust the brakes but I was being ummm stubborn.
As new as it is, I'd take it back to the dealer and have them check the brakes - and have them give you a loaner car!