The train approached rapidly, the red glow resolving into a pair of brilliant laserlike beams flashing between the engine’s oversized front bumper and the Coreline overhead. In the spots where the beams touched it, the Coreline’s own light show became even more agitated, and I amused myself by watching out of the corner of my eye as several of the uninitiated eased a few steps backward. The lasers winked out, and the dark mass resolved into a shiny silver engine pulling a line of equally shiny silver cars, the whole thing decelerating rapidly as it neared the platform. The engine and first few cars rolled past us, and with a squeal of brakes the Quadrail came to a halt.

There were sixteen cars in this particular train, each with a single door near the front. The doors irised open simultaneously and each disgorged a conductor Spider, a more or less Human-sized version of the drudge who’d made off earlier with my luggage. The conductors moved to the sides of the doors and stood there like Buckingham Palace sentries as lines of Humans and aliens maneuvered their carrybags out onto the platform and headed for either the waiting rooms or the glowing hatchways marking the spots where shuttles were waiting. At the rear, drudges were busily removing larger pieces of luggage from the baggage car for transfer to the shuttles, while on the far side of the train I knew other drudges would be doing likewise with the various undercar storage compartments.

I looked toward the front of the train, where a pair of drudges had reached the engine. One of them set its feet into a line of embedded rings and climbed partially up the side to a slightly lumpy box set into the engine’s roof just behind a compact dish antenna. Two of the spindly legs reached up and popped the box lid open, delicately removing a flattened message cylinder and handing it down to the other drudge waiting below. The second Spider accepted the cylinder and passed up one of its own, which the first then replaced in the box. Deceptively compact, those cylinders were packed with the most current news from around the galaxy, along with private electronic messages and encrypted data of all sorts.