Well, they're not changing much. It's a ~4 hour savings, max, on a transatlantic flight.
Perhaps a passenger ICBM? That would really cut down "across-the-planet" travel time down to a total of ~30 minutes. Why not? the Fantastic Four had one in their Manhattan laboratory (https://www.tumblr.com/search/passenger%20icbm#).
Perhaps a passenger ICBM? That would really cut down "across-the-planet" travel time down to a total of ~30 minutes. Why not? the Fantastic Four had one in their Manhattan laboratory (https://www.tumblr.com/search/passenger%20icbm#).