Sterling Trucks - Custom-Built Medium and Heavy-Duty Vocational Trucks and Tractors Sterling trucks, Sterling's Ready, Commercial Trucks, construction, government, municipal, distribution, P&D, LTL, reliable, dependable, work trucks, medium duty, heavy duty, heavy truck, tractor, L-Line, A-Line, Acterra, Bullet, 360, work experts, Alternative Fuel, Clean Drive Technology, LNG Manufacturer of Custom-Built Medium and Heavy-Duty Vocational Trucks and Tractors, including the Bullet, a Medium-Duty Commercial Truck, and the Sterling 360, a Medium-Duty Cabover Truck