Diagrams : * Bathyspheres are talked of like they were Automobiles (Accu-Vox by Prentis Mills(in BS2)) -- so there must (extrapolation) have been more (affordable) miniature subs in Rapture to qualify that talk (saw an add for a 'luxury' sub somewhere) -- and still the problem would be the facilities subs require (which are not that simple - not like a 'curbside' stop anywhere in a real city). It would be logical that the Subs are able to share the same 'Metro' docking systems as the Bathyspheres. * Bathyspheres have some limited maneuvering abilities (to facilitate docking at stations) but mainly use the moving cables to travel long distances along the the MetroWays (fixed paths more like cablecar routes) and thus can dedicate more of their volume to 'cargo'. They travel station to