Even after 7 pages I'd still like to read more. haha
I've drawn a lot of cars with pencil and paper, but they really are just illustrations, not designs. I've also done Photoshop work modifying photos to get a visual of what I have in my head. Attempted photo-realism is not very forgiving.
I also have a Wacom tablet and haven't found it to be very useful. I got the 6x8 and it is actually a little large. It seems my natural stroke is not very compatible with the size of the tablet and the screen window. It helps when I zoom out, but then I get a step in the line when zoomed back in.
A lot of what I do is either photo-based or graphic/logo-based. I have found it tough to really bring artistic style to a digital medium.
This is I think the best I've done so far, and as you can see it is somewhat of stretch to try and make it believable as real.
