Couldn't the capacity issue be somewhat mitigated by stacking tubes vertically and/or increasing the tube diameter? As for the curvature issue, there seem to b

Couldn't the capacity issue be somewhat mitigated by stacking tubes vertically and/or increasing the tube diameter? As for the curvature issue, there seem to be a couple ways around that. One is to straighten the route to the maximum extent possible (not trivial but not impossible for some routes). The other is to build massive curves and decelerate into them. Again, there are tradeoffs (cost,speed) but it's not impossible. There are just so many variables. A hyperloop could end up being great for some areas and unworkable in others. Lastly, right of way/land clearance should never be a key constraint. That won't stop us if we really want to build a hyperloop.