ประเภทใดมีความเร็วสูงสุดต่ำสุด ?ไม่จำเป็นต้องใช้ทุกตาราง
which type has the lowest max speed ?It is not neccessary to use all the tables.
 table_203_154:  id [ number]  "type" [ text]  "manufacturer" [ text]  "numbers" [ text]  "note" [ text] 
SELECT "type" FROM table_203_154 ORDER BY "max speed (km/h)" LIMIT 1