Bulgarian architect Martin Angelov wants to put bike lanes in a pretty weird place: the skies above the street. Before you dismiss the image above as a flight of fancy, he's actually put more than a little thought into the idea of bikers riding around on wires trapeze-style.
To keep the riders safe, each biker would attach to the aerial path by way of a handlebar-level wire. Then you'd simply ride along in a bowled-out bar that keeps the tire secure. There'd be no passing, of course, and it leaves one to wonder how you'd get on or off — or if it'd only connect two points, rather than letting people come and go.
Check out more of the safety gear in the gallery below.