Why not install Vertical Axis Wind Turbines (VAWT) along the motorway sides as shown in the picture? When a vehicle passes by the VAWT, the wind energy generated will drive the VAWT, the electricity generated can be used to light up the street lights! This has to be made mandatory installation!
This is a simple idea when implemented would result in huge benefit by harnessing energy.
Imagine there is one million of kilometers of road and install VAWT every 50 meters, we have 20 million units generating 1 kw per hour, it adds up to 20 million kilowatt per hour production..simple idea huge saving!!
update: Feb 07, 2010, Someone had implemented this idea! feels great
http://www.engadget.com/2010/02/06/eco-shocker-turbine-light-concept-uses-wind-to-light-highways/
