Check out this futuristic eye candy. Design firm Foster + Partners has proposed a 137-mile network of elevated bicycle lanes over commuter rail lines in London.
Dubbed the SkyCycle, it could accomodate up to 12,000 cyclists per hour, making getting into and around the city a breeze.
When will we be able to go for a spin on the SkyCycle? London's mayor supported the idea when he met with the SkyCycle team back in 2012, so there's hope that the city will take Foster's plans seriously. Yet with funding still murky, we're looking at a decade or two at least before it opens. In the meantime, we can dare to dream that other cities will follow suit.
Peter Schlesinger is a research assistant at Travel + Leisure, and a member of the Trip Doctor News Team. You can follow him on Twitter at @pschles08.