The greater fuel efficiency of cars means fewer gallons of gas are being sold, so less tax money gets set aside for road-building.
It's an issue on the water, too… recreational boating has increased in Oregon in the past five years, but fuel tax revenue declined. And so did motorboat registrations.
So the approved a motorboat registration fee increase, from $3 a foot to $5 a foot, pending legislative approval. We hear about the increase, and where the money goes.