Andy Foster is the art director at Motor Trend magazine. I've worked with Andy on a number of assignments.  Most of the images in automotive magazines are photography. I enjoy the freedom to use different media approaches when I feel they better suited the assignment. Also I enjoy contrasting the approach with the subject. Instead of the harder edged approach of vector I wanted to add a human quality to the mechanical subject matter. Andy called with a spread illustration for the evolution of the diesel. I was directed to include certain vehicle models from the past. The present day diesels are very different than their truck based ancestors. I did offer different approaches in the sketch phase, but the feeling went to the evolutionary steps. I still think the "Dinosaur" #3 sketch could have been fun. Still the challenge of resolving the morphing from one model into the next, and dealing with the old gutter ending up being my main hurdle. The illustration is on the newsstand now, but of course a few months back when I did this assignment the pain at the pump was mounting. Diesel prices are tracking gasoline, maybe the bicycle should have been the last stage on the right?