Most harness races now start from behind a motorized starting gate, called a "car start" or "auto start". This device consists of a car or pickup truck equipped with a hinged gate that resembles metal "wings" on each side of the vehicle. As the vehicle is driven down the center of the track, the wings are extended and the horses line up in order behind it. When the gate reaches the starting line, the starter retracts the wings, which fold inward toward the vehicle body. The vehicle then accelerates away from the horses and pulls off to the outside to let the racers proceed; it many cases, it then follows close behind the racers for officials to view the race and any potential infractions of rules. The modern starting gate uses a driver for steering the vehicle while the starter sits in the rear to concentrate on the actual horses positioning during the "score up". The starter will also observe the race and call a false start if required.