For the past twenty years undocumented residents of California have been banned from applying for driver's licenses. But in a few months, that's all going to change. The state is implementing a new law which offers licenses to the potentially million and a half undocumented residents in the state -- many of whom are already driving without them. Now the challenge is making sure that this massive change to the rules of the road in California rolls out smoothly. KCRW'S Saul Gonzalez has our story.