I don't want to "hog" the space at USkTc, but I also wanted to share my 4th attempt at this car. The first is posted below. This one is closer to what I wanted to achieve in the first place, one to emphasize the sexy backside of this machine by exagerting it a bit and two, to create a loose sketch.
Note this sketch was posted directly from my flickr account (see caption). This can be done from personal blogs, flickr accounts, etc. All one has to do is find the little FB icon, click it, be sure you input "urban sketchers...." in (it will find it for you), add a few words and click ok.