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Tesla cars can be bought in Bitcoin.

Tesla customers can now buy their car with Bitcoin, company chief Elon Musk has said.

Mr Musk, a well known Bitcoin enthusiast, made the unexpected announcement in a tweet.

But Bitcoin's value rapidly moves up and down - meaning the cryptocurrency price of the car could change day to day.

Tesla has invested heavily in the digital currency, buying $1.5bn (£1.1bn) worth of Bitcoin.