 Those things exist. It's a matter of cost, though, right? Anything can be done. I mean, we have some really brilliant minds out there that come up with some really cool things. But is it affordable? And one part of our mission statement is be affordable. And while the technology is really good, we'll let California or somebody else kind of develop it and make it more mainstream and then bring the cost down through R&D. But I have heard of some pretty amazing things that people are coming up with.