Either rail or flight/spaceflight.
Rail because it's STILL, several hundred years after its invention, a very efficient (and can be quite fast, too!) way to move stuff around.
I may be slightly biased on the former, however.
*wears avatar with pride*
"Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so." - Douglas Adams