Enlarge / An exploded view of Magna's driver monitoring system built into a rearview mirror. (credit: Magna) Distracted driving continues to be a problem in the US. One solution to the problem might look something like a new rearview mirror made by the automotive supplier Magna. At first glance, it looks like any other auto-dimming rearview mirror, but it cleverly incorporates a driver-monitoring system, or DMS.