Transport infrastructure consists of the fastened installations, together with roads , railways , airways , waterways , canals and pipelines and terminals corresponding to airports , railway stations , bus stations , warehouses , trucking terminals, refueling depots (together with fueling docks and fuel stations ) and seaports Terminals could also be used each for interchange of passengers and cargo and for maintenance. In his submission to the UN, Christof Heyns factors to the expertise of drones. Unmanned aerial vehicles have been intended initially just for surveillance, and their use for offensive functions was prohibited, but once strategists realised their perceived advantages as a means of finishing up targeted killings, all objections were swept out of the way. On 5 November 1895, George B. Selden was granted a United States patent for a two-stroke car engine. This patent did more to hinder than encourage improvement of autos within the USA. Steam, electrical, and gasoline powered autos competed for decades, with gasoline inner combustion engines achieving dominance in the 1910s. auto- +â€Ž mobile, because the car is powered by an engine quite than pulled by horses.