That would explain all the dark-haired men in suits entering the small building to the left of the station. Usually only mobsters enter buildings that don't have doors.
The answer to your question can be found in the Brookwood Gardens teaser.
The location of this fictitious park is Oklahoma, near the Wichita Mountains.
One thing many people in Oklahoma enjoy is go-kart racing, and Overdrive Junction was the first motor speedway built in Brookwood Gardens. A second go-kart track was built on the other side of the park in the late 90s.
Riders have been known to leap from their karts to try and land on the trains that pass underneath the speedway, despite a rule specifically prohibiting it. Some riders leap onto the train tracks when there isn't even a train in sight, which has baffled park management for decades. The covers added to the train cars in 2002 have deterred most of the leapers, although some zealous thrill seekers still jump. Since the covers are made of woven polypropylene with small springs attached, those who land on the train now will bounce off and faceplant into a tree or the fake city hall building.
These mischievous patrons haven't given up yet. Although there is also a rule specifically prohibiting guests from bringing cookies onto the speedway, nobody really checks riders' pockets for cookies anymore, so when a train passes, they throw their cookie and see if they can land it in the train. While some train passengers don't mind baked oatmeal raisin to the back of the head, most of them find it quite irritating, so now all cookies sold in Brookwood Gardens are soft-baked to maximize air resistance and increase the possibility of mid-air disintegration.