When Carter opens the bottle of champagne with his grandmother, it sprays onto the windshield of the car and is seen dripping down.
When the car is driven out of the garage a few minutes later, the windshield is clean.
While Weaver and Romano are talking, Weaver pushes the up elevator button but the bottom button lights up. She turns away to say something else to Romano and when she turns back she hits the down button just before the doors open and she gets in.