My pleasure. One interesting segment of their announcement that I haven't seen highlighted is that Tesla semis traveling in sequence are actually more efficient than rail. That could be really disruptive. Over 10 years ago I wrote a blog about the potential impact of enabling autonomous cars to draft one another on highways, and it seems tesla is moving toward that. Eventually one can imagine miles long "trains" of Tesla cars and semis intelligently "linked" to maximize efficiency and speed that new cars can dynamically enter and exit, unlike with rail. Rail may very well be on the way out.