Hydrocephalus is due to a problem with the flow of the fluid that surrounds the brain. This fluid is called the cerebrospinal fluid, or CSF. The fluid surrounds the brain and spinal cord and helps cushion the brain. CSF normally moves through the brain and the spinal cord and is soaked into the bloodstream. The flow of CSF is blocked.
The Tesla Model S has a collision avoidance assist system that automatically engages the brakes to reduce the impact of a frontal collision. Automatic emergency braking will stop applying the brakes when the driver presses the accelerator pedal, the brake pedal, or sharply turns the steering wheel.
Pre autopilot cars have an electric vacuum pump and conventional Brembo brakes. You can faintly hear the pump working when you first get in the car. The autopilot cars have electromechanical brakes. The brakes bring big news, too. Rather than use a vacuum brake booster, Tesla uses an electromechanical brake setup.