I don't know if this really is considered concept art, but I think that since it is art is is ok.
I design and manufacture custom graphics for motocross, freestyle, and hare scramble riders, at XGX Racing. We take customer's ideas and create original artwork(both digital and artisan) and print it to decals that they apply to their radiator shrouds.
We are a new company and are kind of unique in this indusrty, so in addition to doing art for a living, I get to see a new company get off the ground and grow.
Well enough chatter, enjoy and C&C always welcome.
Here are some designs:
Here they are applied to the bikes:
Hope you enjoyed!