The bikes Jonathan and Jennifer are riding have drop handlebars, which only the most expert of cyclists use. In fact, the two of them aren't even gripping the drop handlebars correctly. They are meant to be held right at the bottom, where the handlebars end.
When Jennifer Hart and Dominique meet at the end, the camera jiggles and you can see it's a split screen.
The headline in the newspaper when Jennifer is kidnapped is incorrectly punctuated as "Wealthy Industrialists' Wife Missing." (Should be "Industrialist's.")