CREATE TABLE table_38023 ("Driver" TEXT, "Constructor" TEXT, "Laps" TEXT, "Time/Retired" TEXT, "Grid" TEXT)

What is the Time/Retired for the BMW Sauber, and Nick Heidfeld?
SELECT "Time/Retired" FROM table_38023 WHERE "Constructor" = 'bmw sauber' AND "Driver" = 'nick heidfeld'
SELECT "Time/Retired" FROM "table_38023" WHERE "Constructor" = 'bmw sauber' AND "Driver" = 'nick heidfeld'