Renewable energy thoughts

I was thinking that it would be a good idea to use the infrastructure that is already in place to harvest renewable energy from motorways and railroads. 

What I would do is build a frame in the central barrier of dual carriageways and motorways that supports lots of smaller wind turbines, they would harness all the wind that moves across the whole country because motorways go across the whole country; in America they call them freeways I think. 

I'm my little world, the central barrier of a dual carriageway would be a place that harvests wind energy. 

Then later when technology becomes more advanced, we could build panels that hang above motorways, they let visible light pass through and absorb infra red light and Ultraviolet light to use as energy. When it rains, the panels would collect rain water and send it to farms for irrigation. 

I think it would also create more jobs because people would need to maintain these structures.