At 28:31, Sheriff Rydholm lightly opens a flower-patterned curtain to look outside. However, there is no window, but instead a wood panel wall.
In the "day-for-night" scenes the cars don't have their headlights on. If they are supposed to be driving at night they should have lights on.
When the police car does a u-turn, a reflection of the interior camera can be seen on the back of the front seat.