The military vehicle broke down at the side of a highway, leaving Mandela stranded for 40 minutes.
Doctors say there has been little change in the condition of the 94-year-old leader, and he continues to be in a serious but stable state.
Mandela, who was brought to hospital on early Saturday for treatment of a renewed lung infection, spent second night in hospital today.
Anti-apartheid hero Nelson Mandela was doing well at home after being discharged from hospital, the South African presidency said.
Former South African president Nelson Mandela was airlifted on December 08 from his rural village to a hospital in Pretoria for a series of tests.
Former South African president Nelson Mandela did not attend African National Congress centenary celebrations earlier this month.
Day in Pics: 28th August
August 28, 2014
Bipasha at launch event for Delhi Half Marathon