By 2050, eight states in the U.S. and five countries will ban the sale gas powered vehicles and only allow zero-emission vehicles (ZEV) to be sold.
Car and Driver reports that eight states (California, Connecticut, Maryland, Massachusetts, New York, Oregon, Rhode Island, and Vermont) and five countries (Germany, the Netherlands, Norway, Quebec, the United Kingdom) will only allow automakers to sell ZEVs by 2050. The announcement was made against the backdrop of the United Nations Conference on Climate Change (COP21) taking place in Paris. The two groups point that only selling ZEVs allow emissions to be cut by 40 percent, temperatures will stabilize, and a number of other benefits.
But there are some stumbling blocks to this goal. The biggest one is can countries and states ban the sale of gas vehicles. There's also the question of whether people will be interested in buying a ZEV.
Source: Car and Driver