Interesting.. so its true they are getting cable cars. Several months ago there were somewhere (in this forum???) a notice that some executive at Doppelmayr (world's largest cable car manufacturer) spilled the beans at some conference or something like that.
This is not an attraction, it is a transportation. OF COURSE it will have AC and OF COURSE it will be enclosed. These things are really super reliable. These are the same people that build the cable cars in the Alps (think major snow storms) as well as in several Latin american cities (think torrential rain and winds).
Take a look at the video in this link, which is from Doppelmayrs cars in La Paz.
https://www.theguardian.com/cities/2014/apr/09/largest-urban-cable-car-la-paz-bolivia