The Tesla is the current state of the art in electric vehicles if you can afford the $120,000 price tag. You will want to check out the website EV World ( http://www.evworld.com/)
to find out more about various electronic vehicles.
I think in the near future, plug-in hybrids offer a great solution to both fuel economy and driving range. Toyota is targeting 2010 for bringing models to market. The Chevy Volt is also planning for around that time frame.