The novelty's never quite worn off of being able to go to France on my long runs when in Geneva. Last time the only way I knew I'd crossed back into Switzerland was that the font on the house numbers had changed.
There's still a border crossing station on the roads between Konstanz and Kreuzlingen (an Albury-Wodonga-esque pair), but I've never seen anyone in it. I've had my passport checked crossing the border by train once so fair.