Combined state and federal funding for highways alone are somewhere around 140 billion dollars a year.
And you already pay for that with car assesments, gas assesments, assesments on new housing construction, income taxes (for the DOD part of the interstate system), etc...
The only reason it doesn't balance is because it gets contaminated in the general fund and sidetracked into all sorts of doo-gooder BS...
doo-gooder BS...