Global warming - an urgent problem requiring radical solution (no politics or religion)

Extra comfy to get to lie down in them too, US cities should aspire to be like that instead of the current corrupt sh**h0les that they are smh.

$200 a pop for one ride.
Your idea wouldn't work EE.
Just the sag alone would beat it. Riders would be stuck over the East River or whatever.
As a commuter thing? Ha.
Even in Dubai there was probably a lot of objection ...
Those ziplines are a hellicopter and aircraft hazard. 
A bad one.
Bigshots in downtown Manhattan fly in in seaplanes and land at east river docks.
Or they did. Maybe that's been stopped now.

I already specified there would be an initial steep drop for the first 500 feet or so off the Freedom Tower to guarantee speed, before it levels off to a more gradual 5-9 degree bank or whatever over the rivers to Brooklyn/Jersey.