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When Tesla Motors begins sales of the Model S sedan next year it'll be a huge move. The "boutique" electric car maker will go from selling a relative handful of its two-seat roadsters to tens of thousands of these much bigger -- but also much less expensive -- four-door cars.

If the Model S takes off, it'll be because drivers have made a big move, too. There has simply never been another car like this one. Yes, the Model S is a plug-in electric car that uses no gasoline, but that's just the start.

It's also a three-row, seven-seat sedan with two capacious trunks; one at each end of the car.

Inside, there are computer touch-screens instead of gauges and *****. And all of this comes at a price, Tesla says, that will be close to similarly-sized German luxury cars.

But read-on, there's a lot more that could make this a truly revolutionary new car.

Read more: http://money.cnn.com/galleries/2011/...ectric/?iid=GM