Truck platooning is an aerodynamic approach to cut fuel consumption by reducing wind resistance. Two big-rig trucks speed down the freeway only 30-50 feet apart leaving no real gap between them with the lead truck in control. The reduction in aerodynamic drag of two-truck platoons provide significant fuel savings. Proponents of truck platooning allege it allows the second truck to react more quickly and accurately when the lead truck must respond to an obstacle ahead.Several European Countries are attempting to lead the way in what they call smart truck driving. In Germany, Mercedes is testing three big rig trucks platooning in what is termed Daimler's Highway Pilot Connect System. The trucks are controlled by the lead vehicle through wireless communication. If the lead truck's collision avoidance system activates its brakes the following trucks will do the same.In Mountain View, California, Peloton Technology is an early leader in this field. They make hardware and software that allows the trailing truck's brakes and acceleration to automatically synchronize with the one in front.