Kenyan motorists drive on June 4, 2012 o

Kenyan motorists drive on June 4, 2012 on the newly upgraded highway on Thika road, which has helped ease traffic in the country's capital Nairob. According to an IBM Commuter Pain Survey, Nairobi residents have the fourth most painful commute in the world. City officials estimate that traffic jams cost the economy over 600,000 US dollars (482,600 euros) per day in lost productivity, fuel consumption and pollution. It has been estimated that the population of Nairobi will increase from the current 3 million to 4.3 million in 2025, hence the urgent need to upgrade the city's roads. AFP PHOTO / SIMON MAINA (Photo credit should read SIMON MAINA/AFP/GettyImages)