Inspired by ski lifts, the system involves a half-pipe that supports the bike’s wheels, and support cables for balance on either side. The cables are supposed to connect to the bike’s handles through a hook. For safety, the cable has provisions for carabiners and harnesses.
Biking has its advantages, indeed: you can weave through traffic, you keep fit, and you’re traveling green. But biking through busy streets isn’t exactly safe, especially with the danger of cars sideswiping you. Some countries and cities have bike lanes, but these often eat up a big portion of road that can otherwise be used by automobiles. And in some areas, the bike lanes aren’t even enforced. In my place, even big buses use the bike lane to overtake!
Does it make sense to take biking to a higher level (literally), then? There are disadvantages, yes. How about traffic jams in the air? You’ll have nowhere to go but forward, but what if a bike in front of you is stuck somehow. And then there’s always the possibility of falling. However, if you’re concerned for the Earth and for your health, alternative means of traveling are always welcome ideas. Yes, bicycles on high-wires, included!