query: How fast can a tank go?
passage: Tank
Tanks are highly mobile and able to travel over most types of terrain due to their continuous tracks and advanced suspension. The tracks disperse the weight of the vehicle over a large area, resulting in less ground pressure. A tank can travel at approximately 40 kilometres per hour (25mph) across flat terrain and up to 70 kilometres per hour (43mph) on roads, but due to the mechanical strain this places on the vehicle and the logistical strain on fuel delivery and tank maintenance, these must be considered "burst" speeds that invite mechanical failure of engine and transmission systems. Consequently, wheeled tank transporters and rail infrastructure is used wherever possible for long-distance tank transport. The limitations of long-range tank mobility can be viewed in sharp contrast to that of wheeled armoured fighting vehicles. The majority of blitzkrieg operations were conducted at the pedestrian pace of 5 kilometres per hour (3.1mph), and that was only achieved on the roads of France.[71]
passage: History of the tank
In 1914, the British War Office ordered a Holt tractor and put it through trials at Aldershot. Although it was not as powerful as the Foster-Daimler tractor, the Holt was better suited to haul heavy loads over uneven ground. Without a load, the Holt tractor managed a walking pace of . Towing a load, it could manage . Most importantly, Holt tractors were readily available in quantity. The War Office was suitably impressed and chose it as a gun-tractor.