Observing its busy stations today, it is difficult to picture Seattle and Puget Sound without Sound Transit. Or to imagine how close the transportation agency came to folding. Back on Track reveals its astonishing survival story. After the city took the last streetcar out of service in 1941, Seattle subsisted for decades without a rail system, and it was choking on congestion. So for many, it was a joyous day in November 1996 when voters...