Comment by rngfnby

The point is that it's nonsensical to say flying is cheaper than driving. Its oranges vs apple. Apples and oranges are fruit, flying and driving are transportation. But they're totally different.

1. You're normalizing one cost by the occupancy but assuming the other is single occupancy.

2. The assumption that folks are alone in a car is only true only for short trips, trips that are unpractical and expensive by plane. Folks don't fly 600+ mi because it's cheaper (the fuel isn't cheaper until about 1600 mi), but because it's faster.