Welcomed progress.
Improved range is one of the two keys required for EVs to become common place. The Tesla S model is a big step in the right direction.
If you look at the purchase cost broken down as cost per mile of range the Tesla S model is a bargain per mile of range compared to the much lauded Chevy Volt.
The other key aspect EV manufacturers need to improve is the overall affordability to purchase an EV. EVs need to become as cheap to purchase as conventional powered vehicles.
The decade plus I expect is required for that to happen should be just enough time for the national power grid to upgrade to handle large numbers of at home EV charging stations.
