Under the proposals London would be given complete control over property taxes, including council tax, stamp duty and business rates. The London Finance Commission report also recommended giving the city the power to introduce new taxes, such as a levy on tourists, and greater freedom to borrow.
Mr Johnson said there was an "acute need for London to be able to better plan and finance the infrastructure needed to prosper and maintain a great quality of life, in the face of a decade of expansion".
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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%.