that would use air pressure to put a line through a tube but the city would only authorize a pneumatic tube system for man not for people. he lie beach continued with his project in secret he was able to prove that the concept would work but the city still refused to authorize the system instead it opted for a different technology that could also operate above ground the railway for nearly a century it was the most important form of travel in industrialised west but the technology requires a great deal of infrastructure right away tracks signalling and control systems and railway stations. and eventually the automobile took over as the most important means of transport automobile manufacturers have become extremely powerful and they are loath to give up there are background. congested roads pollution and the cost of fuel have made cars less and less attractive. as