well, I came on this idea while playing My friends have their houses pretty far from my house, and we always have to run to each other to give us the items. I thought about using teleporters but this would be to expensive...
The idea is - shoot items through pipes with a air pressure machine. This would really save me some time. If another mod already have this feature, please tell me, I were only playing with IC2 so far then I will take a look in it too