A lot of people seem really excited about leaving the train. I think if we need supplies then those who know how to defend themselves and want to go should. Is there sports equipment somewhere?
But you should be careful if you are. Zombies usually infect humans by biting them, and they crave living flesh. Once you've been bitten you become one, they can sense the living. I've seen how it works, even the animals could get the virus.
Perhaps we should be barricading the train?