<sod >The $35.7 billion (Â£29 billion) investment will be made in Dubai World Central and associated facilities, including Al Maktoum International airport, over the next 12 years, two people with knowledge of the plan said.< eod>< sod > The $35.7 billion (Â£29 billion) investment will be made in Dubai World Central (DWC), which will support the new Al Maktoum International Airport, and other facilities in the south of the city, over the next 12 years.< eod>