A rear vision system for a host vehicle and a method of using the same, where the rear vision system includes an electronic display mirror that is designed to replace a traditional rearview mirror. The electronic display mirror has an integrated electronic video display that is coupled to a rearward facing camera at the back of the vehicle and displays a video feed from the camera to the driver in real time. The electronic display mirror can display enhanced video output that shows the area behind the host vehicle, along with performance metrics that are superimposed on the video and provide relevant information to the driver. For example, the enhanced video output may include an estimated time difference between the host vehicle and the closest trailing vehicle superimposed on the video; this may be particularly useful when the host vehicle is involved in a performance driving event, like a race.