Every day, I am thinking more and more about this… I have found resources and links in the past week, which I hope to use in the coming 12 - 18 months - we will have to watch our finances, but right now it is easy to make a case for driving an electric car.

We have two vehicles, a 2006 Honda Odyssey Touring and a 1998 Ford Taurus - we spend $280 per month for gas in the Honda and $160 for the Ford - Our total gas budget (not including maintenance is $440 per month.  In the video, Left Coast Electric says that they can do a conversion from $17,000 to $30,000 - they mention that these cars should last 100,000 miles or more and that depending on the type of battery, you should be able to have a range of 40 to 200 miles.  This means that you would make your investment back in 3 to 6 years with an additional - 3 to 6 years of life left in the car depending on how many miles you drive the car each day.  Of course, you can reduce the cost of the conversion by doing it yourself, and there are some amazing videos on YouTube that walk regular folks like you and me through what it takes to do this.

Great resources:
The Electric Vehicle Discussion List
DIY Electric Car Forums
EV-Motoring
Battery Powered Systems

Good luck!  And may the Force be with you *grins*