I started a case study by selecting and drawing an existing mobile cart, but in my case, it was only a rendering project without any explanation of how it was assembled, so I had to invent a mechanism to be able to close and open it easily, move, attach to a bicycle, stop by a kickstand, and pull out by hand, also figure out ways to connect its pieces together.

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Programs used: Rhino, illustrator, and Photoshop.