Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_67 (driver VARCHAR, laps VARCHAR, grid VARCHAR)

### Question ###
What driver has more than 39 laps on gird 15?

### Accurate SQL ###

SELECT driver FROM table_name_67 WHERE laps > 39 AND grid = 15