Even if they succeed in temporarily nudging the price below equilibrium all it will do is result in shortages.
Better things they could do include taking 10% of the money that's spent on highways and putting it towards restoring passenger rail service in this country, creating a crown corporation that makes and sells utilitarian electric bicycles, having the civil service and everyone else work from home as much as possible, prohibiting the sale of new vehicles powered fully or partly by internal combustion engines, and taking six months off to re-evaluate their life choices.