PC Party Leader Doug Ford says he's committed to build a tunnel under Highway 401 if re-elected. But as CBC’s Shawn Jeffords reports, Ford could not give a cost estimate, despite it being months since he first proposed the plan.

Some have warned it's a money pit, but Doug Ford is plowing ahead with a tunnel under Highway 401 from Mississauga to Scarborough despite not knowing the cost.

Some may call it tunnel vision. As Alan Carter reports, Conservative Party leader Doug Ford is doubling down on his promise to build a tunnel under the 401.