I like the Trompe Le Oil / photo-realism perfection of the painting, shiny paint, reflections, etc... but more than that, on the above Shelby Mustang I like the upper right serial number tag, and the gas cap medallion. They are what set the GT 350 apart from the masses, and make that car special to the owner
2 view for better appreciation of the design beauty ( though I don't understand the Continental reference on top of the illustration) but I like the Porsche paperwork in the upper left
And right over the top full gallery of historical perspective.
His website for galleries of examples of his work: http://www.saillustrations.com/newsfeedback.html