I agree the technology does seem down to earth, and they're trying to make it quite practical. I'm also excited. I just think of so many hurdles...I hope they

I agree the technology does seem down to earth, and they're trying to make it quite practical. I'm also excited. I just think of so many hurdles...I hope they make it. I originally wrote a huge reply explaining my thinking, but sounded like a rant. If it works, maybe it can also be used to quickly bore the underground tunnels Musk has been working on. Could be life-changing tech.