I watched about half of that video over the weekend, and his arguments aren't exactly the best. He lists a retail cost for the glass instead of wholesale or production cost. He doesn't really back up his "glass is soft" argument which Dave has already been kind enough to prove is false. His LED test used a white backing, not that I really believe it'd make a huge difference. His cost to bury lines figure didn't really break out the material cost and the labor cost, since they already have to trench up the edge of the roads anyway the labor would be minimal. Just to name a few instances of weak arguments.