What team does Al Unser drive for?
CREATE TABLE "table1_1405704_1" (
  "season" real,
  "race_name" text,
  "winning_driver" text,
  "chassis" text,
  "engine" text,
  "tires" text,
  "team" text
);
SELECT "team" FROM "table1_1405704_1" WHERE "winning_driver"='Al Unser';