I can't seem to be access the article, and so don't know if it focuses on waiting at the airport or the air speed of planes. Regarding the latter, for physics m

I can't seem to be access the article, and so don't know if it focuses on waiting at the airport or the air speed of planes. Regarding the latter, for physics minded people, I recommend David McKay chapter on air travel[1] in his book "Without the hot air" -- actually I recommend reading the whole book, it's free. You need to spend energy to counterbalance the drag on the airplane (which grows as speed^3) and to providing lift (which grows as 1/speed), so there is an optimal speed (if you are optimizing fuel efficiency). So you don't expect to see major increases in speed unless you are ready to burn much more fuel. [1] http://www.withouthotair.com/cC/page_269.shtml http://www.withouthotair.com/cC/page_269.shtml