This is a minecart station system, which at least I haven't seen anyone else do. It allows you to select the station you want to go to, from any station, and you will then automatically skip all the other stations expect the one you want to go to. Not so useful with short distances, however very useful with long distances, where you don't want to be next to your computer all the time to push the button to go forward in each station, for example. Of course, with great advantages, comes great flaws. This station is huge, so it will take up reasonable amount of time to build it. Also, it takes lots of resources. It needs to have 2 minecart tracks, one for each direction, and also the station itself uses up lots of additional rails, plus redstone. However it can be compacted, my design is just a concept. For a showcase on how it works, check out the video I uploaded to YouTube.