What causes the domestic vigorously develop electric vehicles?

With the gradual depletion of fuel, new energy vehicles have low energy consumption, low cost of use, 0 pollution and other characteristics, in addition, many areas are not limited to the number of related subsidies, so the new energy vehicle development is rapid. I personally bought an electric car, is in the nine purple new energy to buy, daily commuting with, but also very convenient, car small good parking, the use of cost is really very low.