SkyCycle: a transport icon for London

Video

I found this video on the world-wide-web some weeks ago and I still do not exactly understand the reasons why not designing the cycling highways in a safer way but on the surface.
May be it would boost cycling for longer trips and passing next to the London Eye would give a magnificent position for cycling in general. But high-rising ideas can result in unsustainable implementations, though the concept is interesting but additional projects need to extend the main network’s attraction area by increasing the citizens’ perceived level of safety. Restrict motorized traffic step-by-step to fight against its side effects.