High-speed rail is still just a dream in America. But why then aren't smart roads a reality?
It is possible to imagine a world in which smart pavement, smart cars, and embedded monitoring and controls would turn highways from gulches that pollute a wide swath of land around them with both particles and noise would become more like rivers.
Read more at the article link...
Via Lauren Moss, Betsy Smalley, Jessica Robson Postlethwaite