CREATE TABLE table_204_630 (id DECIMAL, "no" DECIMAL, "date" TEXT, "race" TEXT, "track" TEXT, "winner" TEXT, "reports" TEXT)

ricky stenhouse , jr. and justin allgaier both won at which track this season ?
SELECT "track" FROM table_204_630 WHERE "winner" = 'ricky stenhouse, jr' INTERSECT SELECT "track" FROM table_204_630 WHERE "winner" = 'justin allgaier'
SELECT "track" FROM "table_204_630" WHERE "winner" = 'ricky stenhouse, jr' INTERSECT SELECT "track" FROM "table_204_630" WHERE "winner" = 'justin allgaier'