He left Washington in 1998 and became chairman of North Carolina's Rural Prosperity Task Force, which pushed to bring high-speed Internet access to the state.

CNN: Burr beats Bowles for Edwards' seat

Despite some of the best roads on the continent and a number of high-profile infrastructure projects, including a high-speed train and a bus service built for the 2010 football World Cup, commuting in Johannesburg is often an arduous task for millions of people.

CNN: The daily grind of commuting in Africa's economic hubs