Crowds gather as an Atlanta Streetcar arrives during a grand opening ceremony at Woodruff Park on Tuesday, December 30, 2014. After escalating costs and a series of delays, the Atlanta street car finally rolled through a stretch of downtown Atlanta. President Obama's transportation legacy hinges on his ability to move the nation toward rail, and the streetcar is one of the first completed projects aimed at making the nation more rail oriented. And the city sees the streetcar as the first of many streetcars that will create an auxiliary transit system over time, attracting investment and creating jobs. HYOSUB SHIN / HSHIN@AJC.COM