The comedian, 53, was driving alone when the brakes on his 1967 Fiat BTM stopped working, the New York Post reports.
As his vehicle headed into traffic on the highway, he pulled the emergency brake, but it didn't work, the Post reports.
So he cut the wheel to the right and the two-door sedan flipped over and came to a stop yards from the highway.
The car rolled onto the passenger side, then the roof and finally topped on the driver's side, according to the Post.
Amazingly, Seinfeld — who is believed to own 47 Porsches — walked away "without a scratch," his wife Jessica said.
"He was a little shocked when he walked in, and it started to dawn on him what happened," she said.
The comedian is making light of the incident.
"Because I know there are kids out there, I want to make sure they all know that driving without braking is not something I recommend, unless you have professional clown training or a comedy background, as I do," he told the Post. "It is not something I plan to make a habit of."








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