Design/form sketching: The objective is to present the ideas in your head on paper so that everyone else can understand them. The viewer should see every curve, crevasse, or detail on the designed object.
Sketches
This is my sketchbook containing a variety of products, but I sketch more cars than anything else. Cars are one of the more difficult things to draw because of proportions, reflections, and perfect symmetry. That's why I love them.