What company was the constructor when Nick Heidfeld was the driver/
CREATE TABLE table_name_50 (constructor VARCHAR, driver VARCHAR)
SELECT constructor FROM table_name_50 WHERE driver = "nick heidfeld"
### Context: CREATE TABLE table_name_50 (constructor VARCHAR, driver VARCHAR) ### Question: What company was the constructor when Nick Heidfeld was the driver/ ### Answer: SELECT constructor FROM table_name_50 WHERE driver = "nick heidfeld"