You mean a bill to return the tax money taken from drivers?
Youre spot-on driftdiver!
In fact, if you havent seen the excerpt below you might find it interesting. A previous generation of state sovereignty-respecting justices had clarified that Congress is prohibited from laying taxes in the name of state power issues, essentially any issue that Congress cannot justify under its constitutional Article I, Section 8-limited powers, nothing in Section 8 justifying federal spending for intrastate highways.
Congress is not empowered to tax for those purposes which are within the exclusive province of the States. Justice John Marshall, Gibbons v. Ogden, 1824.
In other words, unconstitutional but vote-winning federal highway funding should never have left the states in the first place. In fact, this funding is arguably another example of the post-17th Amendment ratification Senate not doing its job to protect the states by killing unconstitutional House appropriations bills.