มีกี่รุ่นที่ใช้เครื่องยนต์ redtop ?ไม่จำเป็นต้องใช้ตารางทั้งหมด
how many models used the redtop engine ?It is not neccessary to use all the tables.
 table_203_525:  id [ number]  "car" [ text]  "engine" [ text]  "compression" [ text]  "power" [ text]  "torque" [ text]  "turbo" [ text]  "turbine" [ text]  "compressor" [ text] 
SELECT COUNT(*) FROM table_203_525 WHERE "engine" = 'redtop'