Too much hot air. How about some real numbers from historical data?
From "Sustainable Energy - without the hot air" by David McKay, p.121. http://www.inference.phy.cam.ac.uk/mackay/Books.html
Energy consumption
(kWh per 100 p-km)
------------------
Car 68
Bus 19
Rail 6
Air 51
Sea 57
Table 20.8. Overall transport efficiencies of transport modes in Japan (1999).