Mats Arehn directed Gösta Ekman in a movie with a scene where Ekman's character fails to get a car to start. Which would also come to be the case in Dödspolare (1985).
The commuter trains stopping at the station in Huddinge, both the one Olsson arrives with, and the one Stickan is shown not being able to get off, are both headed in the direction into Stockholm, not out from town, as they should be. Persson is waiting for Stickan at the station of Tullinge, which was at this time the next station for trains headed out from Stockholm, on their way towards Södertälje. (In 1987, the suburb of Flemingsberg got its own station between Huddinge and Tullinge.)