S ometimes, when she rode hard, when she could really proj, Chevette got free of everything: the city, her body, even time. That was the messenger’s high, she knew, and though it felt like freedom, it was really the melding-with, the clicking-in, that did it. The bike between her legs was like some hyper-evolved alien tail she’d somehow extruded, as though over patient centuries; a sweet and intricate bone-machine, grown Lexan-armored tires, near-frictionless bearings, and gas-filled shocks. She was entirely part of the city, then, one wild-ass little dot of energy and matter, and she made her thousand choices, instant to instant, according to how the traffic flowed, how rain glinted on the street-car tracks, how a secretary’s mahogany hair fell like grace itself, exhausted, to the shoulders of her loden coat.