Photoshop :: Cell Shaded Cars

With video games like Auto Modellista, and XIII (thirteen) the technique of cell shading is all the rage. Below are two tutorials I did not write, and one that I did write. I would like some feedback/ comments on the one that I did write. I posted up the two other ones because most of the people I talk to have either seen them, or know of those tutorials and have been using them as a guide. My way is not exactly cell shading just because I have been doing it so long that I have continually gotten more and more advanced until they look like airbrushed pictures. Either way, here are the tutorials.