Here's a cool new invention called Virtual Cable, this technology projects a "virtual cable" on your car's windshield.
The driver sees the Virtual Cable image through the windshield. It appears as if suspended over the road, similar to a trolley cable. The image is in true 3D and appears to be a natural part of the landscape. The driver uses only peripheral vision to follow the Virtual Cable.
The Virtual Cable is so powerful, intuitive, unambiguous and safe because it appears and behaves with true 3 dimensionality within the landscape.
More info and videos of how it's supposed to work can be found over here.