So he discovers he's not Superman.....

A man plunged nine stories from a high-rise in Jersey City, New Jersey, landed on a BMW — and miraculously survived, according to officials and a witness. 

The 31-year-old crashed through the roof of the black Beemer 330i parked below 26 Journal Square at 10:20 a.m. Wednesday, then stood up with his right arm dangling at his side and asked, “What happened?” onlooker Christina Smith, 21, told The Post.

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-Chris