My question for you guys with electric cars is this:

Has the battery technology improved to the point where they don't begin to lose their energy storage ability?

If it's anything like cell phone batteries, they'll go 100 miles today on a full battery, but only 98 miles next week, 92 miles in 3 months, and 40 miles in 2 years...

Or is the technology different? That is my primary concern with buying an electric car (aside from lack of money)