4. Failures, postponements, growing uncertainties, for what reasons?

While aerial cable may look interesting on paper, actual implementation is rare and, as we've just seen, sometimes takes a long time. This is due to a number of factors, which we'll attempt to review below. First and foremost, the "urbanization" of cableways is a question of their integration into the landscape, even more so than overflight issues, which are sometimes raised, or their relevance to an already extensive choice of transport modes. While a cable routed through a heterogeneous area already marked by transport infrastructure or high-voltage lines (as in the case of Câble 1 in the Paris region) may go relatively unnoticed (although it has not been acclaimed locally), its insertion into more homogeneous urbanized areas with a higher proportion of housing may prove more problematic. Last but not least, financing issues may play a role, if the gains initially announced are encumbered...