Flaps on take-off and landing

If you are going to compare the costs of flying with the
costs of driving, you have to include ALL the costs of driving.

Well, sort of and no. If you already own the car, and would otherwise rent the plane, then by not driving, you are not saving any ownership costs (which are included in the IRS and Hertz per-mile rates). Those would have to be subtracted out, because the car is still depreciating, you still have to carry car insurance, you still have to garage it, etc. Those costs don't go away if you don't drive - they only go away if you totally get rid of the car.

Jose
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There are more ways to skin a cat than there are cats.
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