Tesla electric cars exceed sales forecasts

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The electric car market in the US is a tough one. Consumers are interested in them, but not always willing to give up the ease of cars that run on petrol.

This week an American manufacturer filed for bankruptcy and analysts say others are on the brink.

But one company stands out, Tesla is a maker of sporty battery operated vehicles and is racing past its competitors.

Samira Hussain reports.

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