J C Lawrence
While I am at it, when laying tracks, do you have to complete it by your next turn or can you just add to that track and not lose it? And when you do lose it, is it available to the person after you in the same turn?
Incompleat track must be extended each turn. If it is not extended then any future player (including you) can take ownership of the track by extending it. Yes, this can be the next player in the same turn.