Taylor...focuses on the racism of white commerce and celebrates 'black travelers, armed with the Green Book,' who used their cars as 'a formidable tool that pushed the pendulum of equality forward.' At the same time, because it cannot ignore the current crisis of over-policing and mass incarceration, Overground Railroad wavers between commending and qualifying the efforts of black motorists and businesses. Left unexplained...is what happened after the midcentury struggle for equal access to public accommodations.