Ok this is an idea.
Check it out:

House Republicans are pushing to prop up the highway trust fund with savings from rolling back Saturday postal delivery, GOP leaders said Friday.

Speaker John Boehner (R-Ohio), Majority Leader Eric Cantor (R-Va.) and Majority Whip Kevin McCarthy (R-Calif.) cast the idea as “the best way to ensure continued funding of highway projects in a fiscally responsible manner” in a memo to the rank-and-file.