That. The only time government intervention is justified is when there is a public good or a natural monopoly. If the government wants to spend money on the transition from gas to electric cars, it should subsidize or directly invest in infrastructure, not give rebates for purchasing the electric cars. Once every existing gas station has enough fast charging stationsto accommodate all cars that are willing to use it, then people will start buying the electric cars. An artificial increase in demand for such cars will only create future problems with infrastructure.