Got stuck on the part where you're supposed to find the man jogging near the abandoned car. Talked to everybody and there's no way to reach any new areas as far as I know.
Sorry there is a bug you can get in this area that can softlocked you... After the first NPC, you need to Talk to the second NPC near the fountain right after. If you talk to another NPC It can softlock you and you'll have to use a save before the park. It will be fixed for V3.
