The best car heads-up display can give you the information you need without taking your eyes off the road. Because cars have one major flaw: to see any of the information on your dashboard, you need to lower your eyes  from the road ahead and check what the gauges are saying.

This potentially dangerous activity can be averted by adding a heads-up display, or HUD, that puts a wealth of automotive data in your field of view. Unfortunately you’ll be hard-pressed to find a car with this tech built in, and those that do are typically highly priced. That’s where the standalone units come into play.