Police said that girl was not injured. The driver of the car, however, was taken to a local hospital.
Cary police said they're just as baffled by this wreck as the people who live nearby.
Right now, it's unclear why the driver lost control of the vehicle, which flipped over a steep embankment and broke several trees before landing in a backyard.
The unidentified driver was traveling alone.
At least one eyewitness told police that the car was shaking violently just before the crash.
Police are trying to determine if there was a mechanical issue or if the driver had medical problem.