Daytona International Speedway is synonymous with speed, auto racing, and . . . blind people? Virginia Tech's Robotics and Mechanisms Laboratory (RoMeLa), along with the National Federation of the Blind (NFB), recently debuted its sight-optional and street-legal SUV at the famed racetrack. Dr. Dennis Hong and his students first let blind folks drive a dune buggy without the help of a sighted copilot in 2009 -- as a first step to achieving the