Transport for London wants to tighten rules around congestion charge exemption in order to raise the revenue netted by the £10 charge.
The Toyota Prius - a "hybrid" vehicle which runs on both petrol and an electric engine, two-seater petrol and diesel Smart cars and the petrol Fiat 500 are among more than 50 “green” models that will no longer be exempt.
Boris Johnson needs to rubber stamp the proposals to bring them into force in July. It's thought it will raise an extra £1-2 million for Transport for London.
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Transport for London is not happy that its branding has been used.
If you've been anywhere near Trafalgar Square today you'll notice something different.
Look closely at this collection of images by photographer Jim Grover and you'll notice there's something missing.