Tesla Motors has officially unveiled its highly-anticipated, all-electric Model S sedan, hours after a few leaked photos appeared on the Internet, the New York Times reports.

The Model S will cost $49,900 after a $7,500 federal tax credit. It weigh about 4,000 pounds in full production trim when it hits the U.S. market in late 2011. It will also rip off 0-60 runs in 5.6 seconds, and be able to carry a 50-inch plasma TV with the rear seats folded down.

Inside, a 17-inch touchscreen LCD dominates the center console with Pandora Radio, Google Maps, and 3G cellular broadband. All-wheel-drive will be available as an option.

In an interesting twist, the Model S seats seven: five regular passengers, plus two rear-facing child seats. Tesla plans to sell the car with three separate battery configurations, offering 160, 230, and 300-mile ranges. Tesla CEO and owner Elon Musk didn't specify pricing for the two longer-range packs, the report said, although he did say that they could be rented or leased "if you wanted to go on a long trip, or something."

Assuming Tesla, GM, and Fisker all stick around through 2011, the market for plug-in electric sedans will certainly hit the ground running.