Daimler’s Inspiration big rig certified for use in state whose ‘huge stretches of empty, government-owned land’ make an ideal proving groundDrone trucks could soon be plying US highways after Nevada authorities on Wednesday granted a license to test self-driving trucks on public roads.While companies such as Google and luxury brands like Lexus have dominated the headlines with advances in driverless cars, Daimler board member Wolfgang Bernhard told reporters autonomous trucks were likely to hit the roads first.