Comment Re:to drive (Score 2) 280
I've heard of averages, but "4211 BTUs per person" is meaningless. I often drive either my 1958 V8 Chevy by myself, or my Prius full of 4 kids and me. Neither uses 4211 BTUs per passenger mile, or anywhere near it. Same thing with buses. In Tucson, buses often have 2 or 3 passengers. My Prius beats those by a lot. Commercial aircraft are the only vehicles that have a fairly consistent passenger mileage, because they are always full and all are designed to fly with about the same efficiency.