Via GCC: http://www.greencarcongress.com/2018/01/20180116-fotw.html
The transportation sector used about 27.8 quadrillion Btu (quads) of energy in 2016 with 76% of that used by vehicles on the nation’s roads, according to the US Department of Energy (DOE). Light vehicles, including cars, motorcycles, pickups, vans and sport utility vehicles, used the most energy, accounting for 55% of the total.
Medium and heavy trucks and buses accounted for 21% of the transportation sector’s energy use.
The nonhighway sectors—air, water, pipeline, and rail—used 4.6 quads (16%) while the off-highway sector energy use was 2.1 quads (8%). . . .