Gondolas are the speculation. Even if the gondolas are cheap or the nicest gondolas in existence, they both need support posts which aren't shown in the permit.
So a future permit will need to exist if a gondola were to exist.
After speaking with a friend and
@danlb_2000 - I don't believe it will be a gondola at all. I believe it will be a cable driven monorail similar to MCO or Hogwarts express- just a smaller version of them. It would require minimal metal support structures as the cable is what "powers" it- not the vehicle itself. This would be a more stable and higher capacity and faster transportation system vs any gondola system you can come up with. All at a very similar cost.