This bike is sort of transparent from certain angles, but it's because of that it looks stunning. Made from the same lightweight and transparent plastic used in fighter jet canopies, it was put together by Designaffairs.

Called "Clarity Bike", it's built from a polymer called Trivex. The material is incredibly light and can withstand major shocks and is resistant to extremes of heat and cold.
We believe that the Clarity Bike could be a giant leap forward in bicycle frame engineering and production. The design takes advantage of an advanced polymer which combines high impact resistance, lightweight properties and a gentle flexibility that usually would only be expected on an old Italian steel frame.
[Designaffairs via Dezeen]