Actually, Erik will take the route that Charles could take by himself if he so wanted, because he wants Charles to be able to get around without him later. He thinks that taking shortcuts for the sake of getting them home faster won't help anyone much, considering that he thinks Charles might want to visit Heropa sometime.

That's... another thing; he has to introduce Charles to the intracity porters. "It's kind of a weird sensation at first, but you'll get used to it," he warns, likening it in his mind to what he thinks getting strapped into Cerebro feels like. It's not a far walk to the porter, and from there, Erik walks Charles into the transportation device and--

--Suddenly they're in another state. "Have you ever been to North Carolina?"