CREATE TABLE table_23363 ("Rd." TEXT, "Race" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Most laps led" TEXT, "Winning driver" TEXT, "Winning team" TEXT, "Report" TEXT)

Who held the fastest lap in the race in texas and dario franchitti is the winning driver?
SELECT "Fastest lap" FROM table_23363 WHERE "Race" = 'Texas' AND "Winning driver" = 'Dario Franchitti'
SELECT "Fastest lap" FROM "table_23363" WHERE "Race" = 'Texas' AND "Winning driver" = 'Dario Franchitti'