This is the way it starts out, TFRs in the big city and slowly get bigger until they engulf the suburbs. Then next are the rural areas until the smaller states are covered entirely. TFR go for days and weeks and eventually months and years...
Taking it a few steps further, while maximizing flight time at 32.4 kph/20.1 mph for 51 minutes, the flight distance covered is only 27.5 km/17.1 miles
While maximizing flight distance at 54 kph/33.5 mph over 42 km/26.1 miles, the flight time...