CREATE TABLE table_18782 ("Rnd" FLOAT, "Race" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Most laps led" TEXT, "Winning driver" TEXT, "Winning team" TEXT, "Report" TEXT)

which brand have drivers who won with the names of ryan briscoe and tomas scheckter
SELECT "Winning team" FROM table_18782 WHERE "Winning driver" = 'Ryan Briscoe' AND "Fastest lap" = 'Tomas Scheckter'
SELECT "Winning team" FROM "table_18782" WHERE "Fastest lap" = 'Tomas Scheckter' AND "Winning driver" = 'Ryan Briscoe'