Senate witness notes highway trust fund insolvency compounded by fuel consumption efficiency at hearing on electric vehicles

Eno Center for Transportation Senior Fellow Jeff Davis says in prepared testimony at a Senate Budget Committee hearing on electric vehicles that the Highway Trust Fund had been insolvent since 2008 due to slowing growth in vehicle miles traveled, increased fuel efficiency, and Congress's inability to adjust gas taxes, with electrification exacerbating the problem, noting that while driving on US roads had leveled off and vehicles have become more fuel-efficient, the fund's primary revenue source - the gas tax - had not kept pace with the changes, leading to a growing deficit in transportation funding.