We've got a 14-foot dia. 1940's Jacobs Wind Electric genny on an 80-foot tower in my wife's the front yard (it's a big yard), so I'm used to wind power, but the first time I saw one of these really big ones up close I was totally bowled over. They're so-o-o freakin' big...
So I excuse DB's disbelief.
I worked on huge construction jobs while I was going to college, so not too much surprises me.