CREATE TABLE table_53577 ("Race" TEXT, "Circuit" TEXT, "Date" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Winning driver" TEXT, "Constructor" TEXT, "Tyre" TEXT, "Report" TEXT)

Who was the winning driver on 30 May?
SELECT "Winning driver" FROM table_53577 WHERE "Date" = '30 may'
SELECT "Winning driver" FROM "table_53577" WHERE "Date" = '30 may'