As you may all well know, I have with Limi's assistance developed a functional system for launching and braking a single minecart at stations. I have not figured out a way to have multiple carts per station if we want that. More pressingly, if we're going to have multiple stations we need to develop a mechanism to ensure that carts are always waiting at a station or on their way, and to prevent collisions at stations, all without having to do regular manual maintenance of the system. The simplest method would be to put a cart at each station and have an approaching cart trigger its launch to clear space. This of course would cascade down the entire line which some people might find annoying, and there could be some waits involved. There's also the danger of too many trains leaving from a single station in rapid succession causing trouble, though that could be mitigated by having carts launched as far ahead of an arriving cart as possible. A great deal of how functional such a system would be depends on how many people we expect to use the system. Elu had some alternative ideas, which I hope he'll contribute with.