Orders streaming in for new Tesla electric sedans, to be released in 2011

Tesla Motors says orders have been streaming in for its electric Model- sedans due to begin rolling off assembly lines in 2011.

The U.S. automaker said it has received 520 orders for the sedans since the Model- was unveiled in Southern California last week.

"Frankly the number of cars reserved in the first week has exceeded our optimistic internal projections," said Tesla chief executive Elon Musk.

"Enthusiasm surrounding the Model- is proof that there's pent-up demand for more affordable, fuel-efficient vehicles -- including those made in America."

Tesla's state-of-the-art five-seat sedan is expected to be one of the first mass-produced, highway-capable …