Possible Clues:

• Capital of Sudan
• Sudanese capital
• Estate say with monument announced where Gordon fell
• Capital of the Sudan
• Sounds like where one's vehicle might get buried near the Nile
• General Gordon died at the siege of this African city
• Capital on the Nile
• *Final resting place for old autos?
• Heard hearse, perhaps, approaching part of cemetery in foreign city
• Estate with monument announced for where Gordon fell