user: Question: Who was the winning driver of the Kraco Car Stereo 150?
Columns: ['Name', 'Pole Position', 'Fastest Lap', 'Winning driver', 'Report']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Kraco Car Stereo 150', 'Rick Mears', 'Unknown', 'Rick Mears', 'Report']
SQL:

assistant: SELECT "Winning driver" FROM "Table" WHERE "Name" = 'Kraco Car Stereo 150';