It's just after dawn in Johannesburg, but on the Metrorail express to FNB Stadium, spirits are high on Tuesday. It's a special service laid on by the City of Johannesburg, part of South Africa's celebration of Nelson Mandela's life and legacy. Among those travelling on it, is 38-year-old accountant Ninonti Moyo. For Moyo, it's a special day, one to be recorded - and remembered.