The Enhanced Autopilot follow setting enables you to adjust the follow time of your Tesla. This is the time it takes for your vehicle, at your present speed, to cover the distance to the rear bumper of the vehicle directly ahead. As a result the follow distance will automatically be adjusted for your speed. The faster you are driving the longer the follow distance will be to maintain the same follow time. At 60 MPH 1 second of follow distance = 88ft (approx 6 car lengths). In stop and go traffic the follow distance, even if set to "7" will be smaller than 1 car length. A safe follow distance is generally 2.5 to 3 seconds, assuming dry roads and good visibility.