Albert Einstein, Amsterdam, and cycling: Three cool things that are combined to create one of the coolest pushbikes you are likely to see. Artist Tadas Maskimovas and carpenter Martijn Koojmen teamed up to handcraft this spectacular pi-shaped bicycle, which was tested on the roads of the cycling city of Amsterdam and launched on March 14th, the birthday of the world-famous theoretical physicist. This unique fixed-gear bike has been handmade using carbon fiber and is sure to be the slickest mode of transport you will ever lay eyes on. An ingenious creation in memory of an actual genius.