Transportation Secretary Pete Buttigieg is being touted as presidential material again. And that has raised a series of questions about what he is doing to actually improve transportation in the United States, right now, in this job.

At Vox Media’s Code Conference, held at the Beverly Hilton in September, Buttigieg was asked about future presidential aspirations. “Who knows?” the transportation secretary said. Then he added, “I think you run for an office because you notice something about the office and something about yourself and something about the moment that adds up.”