> Let's assume that each 7M8 journey averages 2500mi Let's then also assume that people are not commontly drive transcontinental distances. Your calacluations

> Let's assume that each 7M8 journey averages 2500mi Let's then also assume that people are not commontly drive transcontinental distances. Your calacluations are interesting but all over the place. E.g.: > How many more people will take connecting flights — the > danger is in the take off and landing after all So in this case distance does not matter. How does car safety compare to airplanes in terms of number of trips? Anyway, the biggest problem is assuming that all grounded flights will be replaced by driving. Either the flight will use different aircraft or the trip is cancelled in majority of the cases.