Consider the case where a government introduces the following two policies (at the same time) to reduce carbon emissions: [1] a tax on the sale of cars, [2] a subsidy on public bus fares. Assuming that the automobile market was initially in an equilibrium state, carefully describe what will be the effect of these policies in this market, using the appropriate diagrams. Based on your analysis, from a market efficiency point of view, is there justification for these two policies or would it be better if the market was left alone at its initial equilibrium? Explain.