Originally Posted by
Dovster
If I had driven in both directions, the plane would still have made the flights. The addition of my weight in the plane made only a minuscule difference in how much fuel the plane consumed during the flight. My driving for two hours each way would have consumed much more fuel.
But if 200 people did that, they might add another flight. And what if by flying, you forced someone else (who couldn't get a seat on the plane for a reasonable price) to drive instead? But actually, the emissions associated with one seat mile on a plane are remarkably close to the fuel burn to move a car one mile. Where you really start to save on emissions is when you put more than one person in the car. It doesn't take that much more fuel to drive a car with 4 people compared to a car with one person.