The brand argued it would lead to massive growth in the adoption of cleaner hybrid cars. Honda is set to cash in on the extension with sales forcasts predicting there will be over 6,500 more low-emission hybrid cars on London's roads by 2008. The brand is trebling supply of its petrol-electric Civic Hybrid in the UK to 3,000 this year. The Japanese marque will also launch a concept hybrid sports car in March, with plans to take it to market in 2009.