Depends on your situation. I rarely drive daily more than the range of the average electric car, so one would work for me. This is especially good with me since engines put out more pollutants cold, and my car barely has time to warm up during the short commute.
If that were my only car I'd take a pluggable hybrid that can be set for short city-only driving, telling it not to use the engine for that trip unless the battery is drained. Electricity here is cheaper than gas, and it's mostly NG and nuke. I cut down on pollution (real pollution not CO2) and am more energy efficient. NG is about 60% efficient and electric motors are over 90% giving me somewhere in the 50s vs around 30% even for a diesel. Less energy = less reliance on terror supporting nations.