Last weekend saw the opening of the Expo line: Los Angeles County's newest light rail train. Off-Ramp producer Kevin Ferguson was at the opening and rode the line all the way to its current western terminus at La Cienega and Jefferson. There, he ran into David Kipen--the frequent KPCC guest and founder of Boyle Heights lending library Libros Schmibros. During his free time, Kipen says, he's also a proud rail geek.