In Minecraft, I have pretty much emptied the places around my home of resources and thus I need to travel a lot to other mines. I would like to know a fast way to do so. I have tried minecarts on rails (take up a lot of iron, and aren't really that fast), boats and more. I guess I should build some sort of construction.
What is the fastest mean of transport you can make in Minecraft (something which is still worth the effort to build, of course)?