My biggest concern with electric cars is safety. They tend to burn a lot more in small accidents. They have so much electrical current in them, the slightest damage causes an arc and flames. A lot of firefighters have been seriously injured due to electic car accidents.
Also the batteries lose capacity in lower temperatures. If they are rated for a 200 mile trip what happens to that at 0 degrees? It becomes a 30 mile trip? There are a lot of things to work out before electric becomes the standard.