Porsche 928 S4 Drawing

What makes me sick about this and several of the other car drawings I have done is that I accidently threw the orignals away. I had them in a manilla file folder and they were sitting on a stack of newpapers. Anyway, they must have been thrown out with the newspapers. Fortunately I made scans of them before I threw them out. This picture here probably took me 15 hours (I'm guessing) to do. The detail is in the shadowing.