 His private plane was due to land in Keflavik, Iceland, but with runways shut down was forced to abort at the last minute, costing his historic speed flight four to five hours.The volcano released approximately 150,000 tonnes of CO2 each day, but the massive reduction of air travel occurring over European skies caused by the ash cloud, saved an estimated 1.3 to 2.8 million tonnes of carbon dioxide from entering the atmosphere by 19 April 2010.Residents of West London under the Heathrow Airport flight path have described the peace as 'bliss'.