The Asbury Park Press reports that Alexis Cohen, of Allentown, Pa., was killed early Saturday in Seaside Heights.
Deputy Chief Michael Mohel of the Ocean County Prosecutors Office says an autopsy indicated she suffered chest, head and abdominal injuries caused by the collision.
Cohen auditioned in Philadelphia for the popular Fox singing competition in August 2007 and the episode was aired in January 2008. She tried out again during the show's eighth season.
A video of her angry rant after being rejected by judges went viral on the Internet.