Database: car_road_race
Question: Find the names of drivers who were in both "James Hinchcliffe" and "Carl Skerlong" pole positions before.
SQL:
SELECT T1.Driver_Name FROM driver AS T1 JOIN race AS T2 ON T1.Driver_ID  =  T2.Driver_ID WHERE Pole_Position  =  "Carl Skerlong" INTERSECT SELECT T1.Driver_Name FROM driver AS T1 JOIN race AS T2 ON T1.Driver_ID  =  T2.Driver_ID WHERE Pole_Position  =  "James Hinchcliffe"