Typically cars aren’t thought of as tools for creating art. Sure, Top Gear‘s Jeremy Clarkson used a Formula 1 race car to shoot paintballs at a canvas, and BMW ran a new M6 with ink sprayed on its tires to make promotional postcards, but one would never mistake, say, a Porsche for a paintbrush. However, pointing the lens out the window at (um, yes officer sir, we were traveling the) speed limit, can create a delightfully impressionistic pastel effect, with lovely distortions and blending. This is the same Interstate 40-side rice field as seen in this earlier shot, taken at a somewhat slower speed.
The (Urban-Wildlife) Interface 
Very nice photos–both of them. I enjoyed them.