As part of WGBH’s “Right of Way” series, Kara Miller, host of “Innovation Hub” has been considering the future of biking and looking at new inventions and ideas that could potentially make things a whole lot safer, easier, cooler and smarter for bicyclists across the country. Miller’s reporting took her to the M.I.T. Media Lab where graduate students have literally been reinventing the wheel with creations such as the GreenWheel, a wheel equipped with an electric motor to change ordinary pedal-powered bikes into something much more powerful.