Page last updated at 16:58 GMT, Saturday, 31 July 2010 17:58 UK

How passenger planes of the future might look

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Engineers have developed a concept plane which they believe, might be similar to passenger planes in 40 years time.

However in the past futurologists have been wide of the mark, with predictions of jet packs, flying cars, and cities in the sky.

Rajan Datar investigates whether, in the year 2050, we are really likely to be flying in transparent aeroplanes powered by solar energy.

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