3. City planners have proposed changing one lane on a highway to an electric-only lane in an attempt to reduce carbon emissions and commute times. To drive in this lane, travelers must be driving in an electric vehicle. (a) If the electric-only lane is implemented, how may this impact the sales of electric vehicles? Briefly explain. (2 marks) (b) Provide two externalities that may result from the implementation of the new electric-only lane. Briefly explain and indicate whether the externality is positive or negative. (6 marks) (c) A local newspaper has written an article regarding the proposed electric-only lane, exclaiming: "City planners should implement an electric-only lane to reduce carbon emissions." Is this an example of a positive or normative statement? Briefly explain. (2 marks) (a) Draw a pr sibilities representing the economy's possible production of milk