Unless you come up with an anti-gravity tech that isn’t dangerous with loud spinning propellers then what is the purpose even?
This is one of those ideas someone gets in the middle of the night and they become obsessed to the point of self-harm, refusing to listen to anyone who suggests this is unnecessary and pointless. In the end they die sitting on a folding lawn chair strapped to a giant firework OR clenching their PS2 controller as the sub implodes.
