If I hadn't seen something like this myself I would never believe it. In the late 90s I worked at a very large tech company, for the CTO. The company was considering investing in a startup that claimed to be able to transmit fiber-like data rates on high voltage transmission lines, somehow by using microwave. I was asked to comment on this. Within a few seconds I said it had to be a scam per Shannon, and at any rate said high voltage lines typically already have fiber on the ground wire at the top of the towers. The company went ahead with the investment.