What if a highway had luminescent markings that absorbed sunlight during the day and can shine during the night. What if a highway had little pinwheels on the side of the road that generated electricity due to drafts by passing cars. What if a highway had a lane that charged electric vehicles that drive in a designated lane. These are only some the futuristic concepts made by Studio Roosegaarde and Heijmans Infrastructure, a Dutch design firm.
They say that this is the future of roads instead of just sitting their doing nothing. However, I cannot help, but think that the cost alone will be a huge disadvantage as well as the extreme maintenance needed. I would love to see these concepts implemented one day. Check out this linkfor more future plans for roads.
Source: http://www.gizmag.com/smart-highways/24836/