Well, since you asked.... A friend of mine is working on an invention that he has patented. It's called DRIVE BY WIRE. Where it uses the GPS signal it gets and shoots a lazer light on your windshield that perfectly aligns with the road you see. So rather than just following the map directions on your GPS... you need to keep looking at your windshield and "follow the red line". It's getting marketed to various car companies right now.