The Hyundai driver whose car tumbled over a Florida causeway into the Indian River in the middle of the night has a few Good Samaritans to thank for saving her life.

One bystander called 911, while she sprinted across the street to flag down an a Melbourne police officer who happened to be conducting a traffic stop nearby.

"Help! There is a person in the water, please!"

Officer Peter Dolci III came running and police body camera footage shows the car, which the witness said flipped over 2 or 3 times, half submerged on its side.

Dolci jumped into the water and discovered a Good Samaritan crouched in the river partially inside the vehicle holding the unconscious driver's head above water.

When Officer Luke Drummer arrived, they pried out the window so they could pull her out and drag her to land.

The unidentified Samaritan could be heard saying she isn't breathing and urging officers to give her CPR.

"He did a great job," Dolci told reporters. "He kept his cool."

The driver was soon in stable condition and breathing on her own, after being taken to a hospital.

Check out the dramatic video on a local news report…

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