Elon Musk has mocked his billionaire rival Jeff Bezos yet again by posting a silver medal emoji as a response to one of the Amazon founder's tweets.
The cheeky message is thought to be alluding to Musk's status as the world's richest man. According to the Bloomberg Billionaires Index, the SpaceX businessman's personal wealth has surged to $222 billion (£162.98 billion), with Bezos trailing his wake with 'just' $191.6 billion (£140 billion).
Musk never misses an opportunity to fire a catty jibe at his space race foe. He overtook Bezos to become the world's richest person earlier this year.
On Friday, Musk added $9 billion (£6.61 billion) to his wealth in just a single day after an agreement with investors saw SpaceX's value rocket above $100.
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