World 100 and 200 metre record holder Usain Bolt says he is tempted to have a crack at the nine year-old 400 metres record held by Michael Johnson.
The 22 year old Jamaican told BBC Sport that everyone wants to break Michael Johnson's record and with no major championships in 2010 he could go for the record that year.
Bolt smashed Johnson's 12 year-old 200 metre record at the Beijing Olympics with a time of 19.30 seconds
He won 3 gold medals all in record time in Beijing.
