SELECT T1.Model FROM CAR_NAMES AS T1 JOIN CARS_DATA AS T2 ON T1.MakeId  =  T2.Id ORDER BY T2.mpg DESC LIMIT 1;
Which model saves the most gasoline? That is to say, have the maximum miles per gallon.
SELECT T1.Model FROM CAR_NAMES AS T1 JOIN CARS_DATA AS T2 ON T1.MakeId = T2.Id ORDER BY T2.mpg DESC LIMIT 1 ;
select t1 . model from car_names as t1 join cars_data as t2 on t1 . makeid = t2 . id order by t2 . mpg desc limit value
Which model saves the most gasoline ? That is to say , have the maximum miles per gallon .