Taking to the air is a Great idea! It won't be limited by transportation infrastructure. And you don't have to place the stations along a 2 dimensional arc as

Taking to the air is a Great idea! It won't be limited by transportation infrastructure. And you don't have to place the stations along a 2 dimensional arc as with train stations. You can have any point to any point directional travel. I forsee a future where people call uber like air travel at their nearest heliport. I'm really glad someone is working on this!