The report says Hart and the driver, 28-year-old Jared Black, both suffered "major back injuries" and were taken to hospitals. Another passenger, 31-year-old Rebecca Broxterman, only complained of pain.
The CHP report says the car immediately went out of control as it turned from a canyon road onto the highway. The report says the driver was not under the influence of alcohol. A representative for Hart didn't immediately reply to messages.
The crash was first reported by TMZ.