CREATE TABLE table_16753 ("Race Name" TEXT, "Circuit" TEXT, "Date" TEXT, "Winning driver" TEXT, "Constructor" TEXT, "Report" TEXT)

What circuit is the Vi Rhein-Pokalrennen race in?
SELECT "Circuit" FROM table_16753 WHERE "Race Name" = 'VI Rhein-Pokalrennen'
SELECT "Circuit" FROM "table_16753" WHERE "Race Name" = 'VI Rhein-Pokalrennen'