The metallic creak of the cable as Petit walks; the rustle and hiss of wind passing over his clothes and through his hair; the muffled sound of
traffic noises floating up from 110 stories below: «The Walk» makes these and other sensations palpable, along with Petit's delight, defiance and moments of doubt and fear.
The Sidewalk Labs proposal in the competitive bid for the project
floated all kinds of technological dreams: a thermal energy grid that would be carbon neutral, sensors that separate waste from recycling, modular buildings that convert from retail to housing, monitors that track
noise and pollution, self - driving transit shuttles, shared - ride taxibots, adaptive
traffic lights, delivery robots, heated bike paths and sidewalks that melt snow on their own.