More than 500 vehicles affiliated with a pop-up car rally roared through the streets of Wildwood Saturday night, leaving the Jersey Shore community and its surrounding towns shaken and seeking answers about how the event could become so unruly and turn deadly. Two people were killed and two others were injured in one crash during the car event, known as H2oi or, H20i, or H2022 — which drew a response from the New Jersey State Police and several local police departments. A 37-year-old man with a history of driving-related offenses has been charged with the deaths, the man’s family and authoriti…