Action Park, a combination theme park/water park located in Vernon, New Jersey, on the rolling site of the Vernon Valley, was infamous for the extreme dangerousness of its attractions and the unbelievable number of guests who were hurt or killed while visiting the park (at least six died and countless were injured). Thankfully, the wonderfully weird story will be coming to HBO Max soon in the form of upcoming documentary Class Action Park, named after one of the park’s nicknames (also used: Traction Park). We now have a trailer and a release date for the doc – and you …