I'm not sure what any of you guys do for a living but I work for an asphalt company here in town and we are installing a stamped asphalt crosswalk at Circuit of the Americas next Thursday, 9/10. If you are interested in learning more about the process or work for a company that could use such a thing, I'd be happy to answer any questions.
It's a thermoplastic that is embedded into the asphalt. It wears better than pavers and is seamless so you don't get the weeds and whatnot growing down the line. It's high visibly and slip resistant so it's perfect for downtown, school zones, and other high traffic areas.
Check out the website for more info and some pictures are below.
http://asphaltpavingtexas.com/services/decorative-asphalt-stamping/