Minerva was genuinely surprised; a train without wheels, without a steam engine, even without tracks, "floating" through the underground at speeds comparable to cannonballs—this was enough to send another severe jolt through her numbed nerves.
Perhaps because the underground tunnel lacked any scenery worth viewing, Minerva's sense of speed and convenience faded quickly, and she soon recovered from her initial shock, surveying the carriage she found herself in.
The interior lights were bright, the decor and cleanliness standards were no different from other compartments, and the attendants carried their professional smiles. But the only occupants were humans dressed in work attire, and the "Humans Only" sign hanging above the entrance was particularly conspicuous. Despite the high-speed travel, the sign didn't sway at all, coldly overlooking the human passengers.
"Alfheim's characteristic racial policy."