Dover's proposal of a cable car system is not a new idea. There used to be a colliery along Shakespeare cliff leading round to the Admiralty pier. Cable cars(or trucks) were used to transport coal between the top and base of the cliffs.
These photos show a much longer aerial cable stem than what we have been presented with. This ran all the way from East langdon all the way through the cliffs down to the port to load coal onto ships. Thats over a mile by estimation!!view of the ropeway that transported coal from Tilmanstone to Dover Harbour - here you can see the twin tunnels in the cliff face through which the ropeway was threaded.
(thanks to J Vaughan)