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_10706961_2 ( winning_driver VARCHAR, fastest_lap VARCHAR )

### Question ###
How many winning drivers were there in the race that had a fastest lap time of 56.920?

### Accurate SQL ###

SELECT COUNT(winning_driver) FROM table_10706961_2 WHERE fastest_lap = "56.920"