CREATE TABLE table_56812 ("Race Name" TEXT, "Circuit" TEXT, "Date" TEXT, "Winning driver" TEXT, "Constructor" TEXT, "Report" TEXT)

Name the constructor for vii kanonloppet
SELECT "Constructor" FROM table_56812 WHERE "Race Name" = 'vii kanonloppet'
SELECT "Constructor" FROM "table_56812" WHERE "Race Name" = 'vii kanonloppet'