Department of Transportation Secretary Pete Buttigieg clarified the details of a forthcoming infrastructure improvement bill, saying that a mileage tax will not be included. Last week, Buttigieg, a former Democratic presidential candidate, suggested that a mileage tax showed “a lot of promise” to help pay for an infrastructure plan. A vehicle mileage tax would tax people per miles driven and would be seen as an alternative to raising the tax on gasoline. But when he was questioned about his comments on CNN Monday, the former mayor said, “No, that’s not part of the conversation about this infrastructure bill.” “I want to make sure that’s really clear,” Buttigieg said, adding that there will be “a lot more details in the coming days about how we envision being able to fund this” that emerge. He did not elaborate. Last week, Buttigieg said during a TV interview that a “so-called vehicle-miles-traveled tax or mileage …