Here's a fixed-gear commuter bike with a twist - it uses two identically shaped frames to form its body. The frames are made from stainless steel, and they flank the wheels when it comes together at the bottom bracket and head tube to create what looks like a normal bicycle.

Developed by Estonian engineer Indrek Narusk , the design apparently draws on "styling cues from cafe racer-style motorcycles and classic streamlined aesthetics". So where are the brakes on this one? [Viks Images by Velonia Bikes]