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]

More uselog posts about cars and usability:
> Dashboard Usability: Comparing Volvo S80, Citroën C6 and Lancia Thesis
> Dashboard Usability II: Why You Don't Drive With the Lights Off
> Car Usability
> BMW iDrive: Legendary Usability
> Thoughtful Details on the VW Polo
> Usability and Safety: Changing the Light-Bulb of Your Car
> The Cup-Holder Myth and Volvo's Revenge