Noise is part of the machine, intrinsic. The greater the noise, the greater 
the bike. She jerks the Rapier’s throttle, sets the engine to wailing, the rear
tire to spinning, shrieking, and with one foot planted on the ground she whips 
the bike around in a quick half circle. A flashy but effective way to quickly 
reverse direction. Tikki drops her weight onto the cushioned synthleather seat, 
and the cycle screams, sending her hurtling up the alley and out to the street.