Nairobi several international companies and organisations. In 2007, General Electric, Young & Rubicam, Google, Coca-Cola, IBM Services, Airtel, and Cisco Systems relocated their African headquarters to the city. The United Nations Office at Nairobi hosts UN Environment and UN-Habitat headquarters. Several of Africa's largest companies are headquartered in Nairobi.Safaricom,the largest company in Kenya by assets and profitability is headquartered in Nairobi, KenGen, which is the largest African stock outside South Africa, is based in the city. Kenya Airways, Africa's fourth largest airline, uses Nairobi's Jomo Kenyatta International Airport as a hub. Nairobi has not been left behind by the FinTech phenomenon
Nairobi transferred from the metre-gauge trains to the CBD. Nairobi is served by highways that link Mombasa to Kampala in Uganda and Arusha in Tanzania. These are earmarked to ease the daily motor traffic within and surrounding the metro area. However, driving in Nairobi is chaotic. Most of the roads are tarmacked and there are signs showing directions to certain neighbourhoods. The city is connected to the Jomo Kenyatta International Airport by the Mombasa Highway, which passes through Industrial Area, South B, South C and Embakasi. Ongata Rongai, Langata and Karen are connected to the city centre by Langata Road, which