What is the fastest car made by Japan?
the fastest refers to max(horsepower); made by Japan refers to country = 'Japan'; name of the car refers to car_name
SELECT T1.car_name FROM data AS T1 INNER JOIN production AS T2 ON T1.ID = T2.ID INNER JOIN country AS T3 ON T3.origin = T2.country WHERE T3.country = 'Japan' ORDER BY T1.horsepower DESC LIMIT 1