CREATE TABLE table_203_688 (id NUMBER, "category" CLOB, "speed\ ( km/h ) " NUMBER, "speed\ ( mph ) " NUMBER, "vehicle" CLOB, "pilot" CLOB, "date" CLOB)

what is the next fastest after the rocket powered aircraft ?
SELECT "category" FROM table_203_688 WHERE "speed\n(km/h)" < (SELECT "speed\n(km/h)" FROM table_203_688 WHERE "category" = 'rocket-powered aircraft') ORDER BY "speed\n(km/h)" DESC LIMIT 1
SELECT "category" FROM "table_203_688" WHERE "speed\n(km/h)" < (SELECT "speed\n(km/h)" FROM "table_203_688" WHERE "category" = 'rocket-powered aircraft') ORDER BY "speed\n(km/h)" DESC FETCH FIRST 1 ROWS ONLY