Originally Posted by skepticalguy90
You have no idea what the guy's motives are. Hell, he could be waiting for you to fall asleep so that he can try to slit your throat and take your gun. Just because he doesn't have an obvious motive, doesn't mean that he is trustworthy.
he could have been the one that cut the page from the engine start up instructions, he memorised the map, so he must have had his own plans for the train, he could just be happy that there is some fresh meat on the journey and he doesn't want the freshest meat (Clementine) to get spoiled by zombies, but who knows?