Originally Posted by
Gone Flying
only way that works is if you assume 1 person per car but every seat on an airliner is full. airliners getting 80 MPG per seat sounds great compared to a 28 MPG SUV but the SUV has 5 seats giving it a 140MPG/seat full or 112MPG for a family of 4
Even if full (they're often not), that SUV isn't carrying any useful payload other than its occupants so MPG is only part of the equation in that scenario. Apples to oranges comparison. Fuel consumption per pound of payload carried would be a much more useful metric IMO in terms of utility. Of course rail dominates here, but only for things that can wait a while.
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