Fresh from victory with the passage of the obamatax, democrats are ready to fight for the next tax. The mileage tax. Seems like all those fuel efficient cars are cutting into gas tax revenue so a new tax is needed. Mileage tax a "practical option," budget analysts tell Congress - Political Hotsheet - CBS News The Obama administration wants to spend $556 billion over the next six years on transportation projects, but they may have to get creative to pay for them. One "practical option" could be taxing drivers based on their mileage, the nonpartisan Congressional Budget Office (CBO) is reporting. The CBO has released a report on a potential mileage tax at the behest of Democratic Sen. Kent Conrad (N.D.), the chairman of the Senate Budget Committee, the Hill reports. While tracking mileage was once considered infeasible, the CBO concluded that new technologies have changed that. "Now, electronic metering and billing are making per-mile charges a practical option," the report said.