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;
What is the car model with the highest mpg ?
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
What is the car model with the highest mpg ?