Mass transit-for the masses not Barney Frank!
Where does the revenue from the fuel tax go?
The revenue from the collected Federal fuel taxes are deposited into the Highway Trust Fund, which has several accounts. Though the percentages vary depending on the fuel type, the majority (approximately 83 to 87%) is deposited into the Highway Account, to be used on road construction and maintenance. An additional amount (approximately 11 to 15%) goes to the Mass Transit Account, and for many fuels, 0.1 cents per gallon goes to the Leaking Underground Storage Tank Trust Fund. Some States have similar trust funds, but there are a number of ways the revenue is handled...
https://www.fhwa.dot.gov/motorfuel/faqs.htm