Only 3 states Delaware, Montana, and New Jersey raise enough revenue from cars to fully cover their highway spending.
The remaining 47 states and the District of Columbia must make up the difference with tax revenues from other sources
By diverting general funds to roadway spending, the burden of paying for the roads falls on all taxpayers, including people who drive very little or may not drive at all.
Source: https://taxfoundation.org/data/all/state/state-road-taxes-funding/
The point being made isnt that roads aren’t worth the investment, its more so that everyone pays for roads regardless of the amount of use they get out of them, but that same investment into cycling paths, bus lanes, or trains is viewed as “government subsidies” or “wasting money on infrastructure that won’t be used by drivers”.