Among the cars with 8 cylinders, what is the name of the one that's the most expensive?
with 8 cylinders refers to cylinders = 8; name of the car refers to car_name; the most expensive refers to max(price)
SELECT T1.car_name FROM data AS T1 INNER JOIN price AS T2 ON T1.ID = T2.ID WHERE T1.cylinders = 8 ORDER BY T2.price DESC LIMIT 1