I've always liked the idea of a heads-up display (HUD) for automotive purposes. A HUD is good for driving for the same reason it's good for aircraft: It keeps vital data in your line of site, while letting you continue to pay direct attention to vital real-world visual input. Garmin has just introduced a surprising twist on the technology with its HUD ($129, available later this summer) which is linked to a smartphone running Garmin's StreetPilot app or Navigon's turn-by-turn navigation app. "HUD is an innovative new way of viewing navigation information in the car, projecting crisp and bright directions onto a transparent film on the windshield or an attached reflector lens," states Garmin "By providing comprehensive road guidance at a glance and right within the driver's line of sight, HUD can help increase safety and reduce driver distraction."
The Garmin HUD plus smartphone combination provides spoken turn-by-turn directions including turn indicators, distance to the next turn, current speed, speed limit, and estimated time of arrival. The HUD also has a lane assist feature to help you get in the right lane prior to exiting a multi-lane highway. Image © Garmin