"Gasoline taxes that for nearly half a century have paid for the federal share of highway and bridge construction can no longer be counted on to raise enough money to keep the nation's transportation system moving, LaHood told the AP in an interview Thursday."
"LaHood spokeswoman Lori Irving said Friday that the secretary was speaking of the idea only in general terms, not as something being implemented as administration policy."
"Most transportation experts see a vehicle miles traveled tax as a long-term solution, but Congress is being urged to move in that direction now by funding pilot projects."