There are currently four bidders hoping to take over the venue but West Ham are the favourites.
But at his first meeting chairing the organisation deciding the future of the Olympic Park, the London Mayor told London Tonight that he is not "wedded to football".
Have West Ham's chances of moving into the Olympic Stadium been dealt a blow by Boris Johnson?
The details now from our political correspondent Simon Harris.
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The footage was apparently shot in south London showing a motorist eating a bowl of cereal, and texting whilst sitting in traffic.
The Prime Minister is trying to curb the money laundering that goes on at the highest ends of the London property market.
The average increase across the capital is 9.2% this year - with areas in the east and south of the city up by 15-16%.