Saul Griffith

“Transportation Sector The transportation sector is a close second to industry in terms of energy use. While air travel gets a bad rap, it is transport on highways that by far dominates this sector’s energy use, using more than 10 times the energy of air travel. Of this highway energy, about 75% is expended by small vehicles, the passenger cars and trucks used to move ourselves around. Amazingly, almost half of this is used on trips of less than 20 miles, mostly to get to and from work and for family responsibilities—things like church, shopping, and school. Of non-highway transport, air travel is the largest contributor, followed by ships and then trains. Incidentally, a fully loaded modern jet aircraft gets the equivalent of around 60 miles per gallon (MPG) per passenger, so for traveling long distances, they beat solo road trips in cars (but if you take four friends with you, even a gas-guzzling American car is not so bad—something hyped by the ride-share community). We can even see that the energy required to transport fossil fuels is significant, with about 1% of US energy use committed to transporting natural gas (we’ll come back to this later). Nearly half of freight-rail transportation is used to move coal—most of the other half is wheat and food. A not-so-surprising revelation from a close study”
― Saul Griffith, Electrify: An Optimist's Playbook for Our Clean Energy Future