When Kamiya told her his car was a new version of the Beetle, Setsuna realized "Oh yeah!  The Beetle!"  Then smiling, Setsuna added "I'm sure Haruka-chan could tell me all about it."

When Kamiya opened her car door for her, Setsuna smiled at him "Ah, a true gentleman."  Sure she could have done this for herself, but even in this modern day & age, it was nice to see some men followed traditional-style chivalry.  Then Setsuna sat down in the front passenger seat of his car, followed by adjusting her dress so that it wouldn't get stuck in the door frame when this door was closed.