CREATE TABLE table_68066 ("Name" TEXT, "Circuit" TEXT, "Date" TEXT, "Winning driver" TEXT, "Winning constructor" TEXT, "Report" TEXT)

Which driver won when the winning constructor was bugatti at the Boulogne Grand Prix ?
SELECT "Winning driver" FROM table_68066 WHERE "Winning constructor" = 'bugatti' AND "Name" = 'boulogne grand prix'
SELECT "Winning driver" FROM "table_68066" WHERE "Name" = 'boulogne grand prix' AND "Winning constructor" = 'bugatti'