This segment on Monday's PBS Newshour mostly covers the Volt, but it does mention that the Nissan Leaf received Europe's Car of the Year award. Paul Solman is shown a table of battery history for last 100 years, Volt vs EV-1 battery density, and wind-tunnel testing of Volt. He asks whether battery technology has plateaued, but is told current progress is steady. He states that the Volt's battery's cost is reported to be 8K$. I was impressed not by the details but that this topic got significant air time on the Newshour.
http://www.pbs.org/newshour/bb/business/jan-june11/electriccar_01-31.html
http://www.pbs.org/newshour/bb/business/jan-june11/electriccar_01-31.html