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_40766 ( "Season" real, "Venue" text, "Teams" real, "Drivers" real, "Champion" text, "Second" text, "Third" text )

### Question ###
What is the average Season when the venue was circuit de nevers magny-cours, and Drivers was more than 30?

### Accurate SQL ###

SELECT AVG("Season") FROM table_40766 WHERE "Venue" = 'circuit de nevers magny-cours' AND "Drivers" > '30'