In Oregon, gas-tax money funds about 58 per cent of the budget used to take care of the state’s roads. As vehicles become more fuel efficient, the gas tax, which is 30 cents a gallon in Oregon and 37 cents in Washington, will generate less and less money. “If we’re using gasoline and diesel sales to fund our transportation system, we’re going to be in big trouble,” said Patrick Cooney of the Oregon Department of Transportation (ODOT). Recognizing the problem early, Oregon started studying alternatives to th