Searching for a way to combine sketchbook with Photoshop without loosing the feel of the sketchbook.

Here is a crazy bike idea from my universe to yours. Inspired by ocean creatures  and insane machines.  The whole thing was started by Jon and Vaughan at We Draw Cars blog. I liked the idea and had some time so I played with the idea.
Those screw drives seems to be very efficient and versatile. I'm surprised they are not being used considering how long ago they were invented. I thought it would be so much fun to blast through the snow and whatever on this beast.