We walked across the highway bridge, thirty-nine of us in jumpsuits and tennis sneakers, with guards front and back and at the flanks, six in all. Beneath us the cars were blasting by, nonstop, their speed magnified by our near vantage and by the sound they made passing under the low bridge. There’s no word for it, that sound, pure urgency, sustained, incessant, northbound, southbound, and each time we walked across the overpass I wondered again who those people were, the drivers and passengers, so many cars, the pressing nature of their passage, the lives inside.