I'm visiting Stevenage on one of the hottest days of the year, making my way on foot from the train station. The sunlight is blinding, reflecting off every 1960s concrete surface around. The new town's famous road network is melting. Its pedestrian and cycle system is fully exposed to the sun; I have to pause in the foot tunnels for respite. I'm weaving up and down in channels between and beneath a grid of dual carriageways, unsure where to turn or whether I will be able to follow my Google Maps route without having to run across a motorway.
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