His family/friends said he had no money for that trip. Graham came there in pieces not by his own accord would be far more likely. BTW if that Mcginty guy had any interaction or even vaguely would be a friend of a friend that knows the neighbor he would be under protection if you look at what happened to Graham (maybe Lewis) due to the neighbor. Any witness of a vanishing man with a fake name is something you need to protect,He might normally travel around Glasgow by bus but it's not impossible that he'd travel up to Tarbet by train. It's only about £16 one way.