In Part 1 and 2 of this Concept Bike Series watch as visual development artist Caleb Prochnow takes 4 bike designs to completion.  In these videos Caleb uses Adobe Photoshop and simple shapes to describe complex mechanical forms.  The bike designs that are worked on in this video are part of a much larger visual development project named “Blood Fuel” that Caleb is currently collaborating on with his younger brother, Luke Prochnow.