Riding on train glitch
To get a free ride on the trains above Stillwater, walk up to the front of a train before it begins moving and jump on the little ledge. Stand there until it starts moving, then wait about 20 to 30 seconds and sprint towards the front door. This is very hard. If done correctly, you should be inside the train. Do not touch the front or back of the train or you will get off. When you want to get off, walk to the back and touch the wall. You will fall off but still be alive.