The Verge reports: [edited]
Garmin has announced the HUD, a portable heads-up display unit for vehicles that can receive navigation instructions from a smartphone and display them on any car's windshield. Paired with a transparent film that sticks to the window or a dedicated reflector lens, the HUD is designed to make sure drivers keep their eyes on the road instead of looking at various screens for navigation purposes.
The HUD pairs over Bluetooth with Garmin's StreetPilot or Navigon apps for smartphones, and it can display turn arrows, distance to the next turn, current speed and speed limit, as well as estimated time of arrival. It also offers speed limit alerts, traffic delays, and locations of cameras, and guides drivers into the correct lanes they need to be in. Garmin claims that the unit can auto adjust its brightness so that it is visible in direct sunlight or at night.