[fauigerzigerk]

That assumes that air resistance is indeed increased. I doubt that, but I'm not a physicist... Maybe it depends on what is next to the motorways now?

[bls]

Wind power works by creating wind resistance. In order for there to be _less_ air resistance with them installed, they would have to be replacing something that caused even more wind resistance. But, that seems unlikely.

[fauigerzigerk]

It puzzles me that some people deem it necessary to down-mod what is basically a question.