The Speedometer will be projected onto your windshield.
Your vehicle will brake automatically if you get to close to another vehicle.
Tries to prevent your wipers from sticking to your windshield.
Your defrost will turn on automatically.
Your vehicle will let you know if you are veering out of your lane.
Your wipers will turn on automatically, or speed up and slow down automatically while it is raining.
This prevents a glare coming in from the sun. This is the only purpose it serves.