Which city and state hosted the adelaide street circuit?
CREATE TABLE "table1_26686908_2" (
  "rd" text,
  "circuit" text,
  "city_state" text,
  "date" text,
  "championship" text,
  "challenge" text,
  "production" text
);
SELECT "city_state" FROM "table1_26686908_2" WHERE "circuit"='Adelaide Street Circuit';