I'm not convinced this would be worthwhile in the St. Louis suburbs as they exist today. For one, low population densities naturally diminish the value proposit

I'm not convinced this would be worthwhile in the St. Louis suburbs as they exist today. For one, low population densities naturally diminish the value proposition of rail. But, second, the existing auto infrastructure is so good that people would likely still choose to drive. Yes, I agree that we should strive for higher population densities and that we shouldn't have invested so much in automobile infrastructure, but given that this is where we are, people will make rational decisions. That's what I mean when I say that we're already too "spread out." By the way, on the off chance anyone's interested, here's a map of those original streetcar lines: https://www.google.com/maps/d/viewer?mid=1W809wsAmB9GR3ZvyIIbizTQw39c&hl=en&ll=38.63615691490101%2C-90.30186700000002&z=12 https://www.google.com/maps/d/viewer?mid=1W809wsAmB9GR3ZvyII...