Gov. Charlie Baker's decision last week to veto a legislative provision directing the state to seek federal funds for an all-volunteer study of vehicle-miles-traveled, or VMT, turned some heads. The tax-averse governor said the proposal, which would test out the imposition of a fee on drivers for the miles they drive on state roads, raised all sorts of fairness questions. But two VMT supporters said such questions are exactly what the study was meant to answer.

The Codcast this week talks to Michael Widmer, the former head of the Massachusetts Taxpayers Foundation, and James Aloisi, the former secretary of transportation. They believe the state needs to transition away from the gasoline tax to a VMT fee and explain why they think the governor was wrong to veto the study.