](http://assets.cgsociety.org/nvart/261352_1277812769/1024bound)The image depicts a future based on technologies developed long after a unified-field science was realized. A future where non-air support dependent flying vehicles are common, replacing most of the vehicles that rolled across artificial pathways and natural terrains utilizing the millenniums old simple machine known as the wheel-and-axle.
A Syd Mead gouache & airbrush emulation–it aint. I veered off on a kind of Scott Robertson tangent stylistically, though at least keeping on track with the topic. After having done countless illustrations in gouache (and airbrush) over the years, I realized after entering the contest, I cant get myself to revisit the media, even virtually, after leaving it some 9 years ago for digital media.
Actually the best way to do an illustration that looks gouache painted
is to use gouache.