The Virtual Cable Car navigation system projects a virtual cable, on the inside of your windshield that seems to hang over the road. The projection is in 3D, which allows you to glance ahead to see where you should drive, instead of getting verbal and visual pointers on how to drive, such as on more conventional car navigation systems. According its conceiver, with this system drivers only user peripheral vision to navigate, causing it to be safer.
[via Infosthetics]