The hyperloop is an incredible idea. One could travel, theoretically, 400 miles in a little under 5 minutes with reasonable, constant acceleration and no maximum velocity in a straight line (so, unreasonable). That means I could make it to NYC in a pinch and be back by dinner.

But I don't think the idea of an air rocket is one that will work. The cost will be incredibly prohibitive. The concept of a "stop" on the hyperloop seems to make the solution far more complex, and the cost of a single stop on the route (assuming in the middle of the trip) is almost 50% additional travel time.