Garmin is known for its in-car navigation systems, but its latest GPS system may take the cake. The Garmin nüviCam LMTHD (fun name) has a built-in dash cam, which allows you to overlay directions right over the feed so you can keep an eye on the road at all times. It also has a number of features usually reserved for luxury vehicles like alerts when you're coming too close to a car ahead of you, or if you're drifting out of your lane. For $399, the Garmin NüviCam LMTHD may be the first stand-alone GPS worth buying in quite a while.