All four got out of their Toyota after it rolled at the corner of Main and East Salem streets around 1:30 p.m.
They were taken to Hackensack University Medical Center.
Hackensack firefighters and police were among the responders and assisted with triage.
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ALSO SEE: A driver who fled the scene after knocking down a traffic light in Totowa overnight was found at a go-go bar in Wayne about an hour and a half later, responders said.
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