CREATE TABLE table_203_99 (id NUMBER, "season" NUMBER, "date" CLOB, "driver" CLOB, "team" CLOB, "chassis" CLOB, "engine" CLOB, "race distance\ laps" NUMBER, "race distance\ miles  ( km ) " CLOB, "race time" CLOB, "average speed\ ( mph ) " NUMBER, "report" CLOB)

which team won the champ car world series the year before rusport ?
SELECT "team" FROM table_203_99 WHERE "season" = (SELECT "season" FROM table_203_99 WHERE "team" = 'rusport') - 1
SELECT "team" FROM "table_203_99" WHERE "season" = (SELECT "season" FROM "table_203_99" WHERE "team" = 'rusport') - 1