Have they actually produced a prototype that is larger than a handkerchief?
I keep waiting for news that they have a full window pane capability as well as a method of adding to existing windows or at least inside the window factory.
Too many things to be worked out to get the technology added to the window supply chain, nothing is clear and as I said the prototypes are still small AFAIK. I expect they need more financing to get anywhere close to market as well.