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_93 ( laps INTEGER, constructor VARCHAR, time_retired VARCHAR )

### Question ###
What is the mean number of laps for the constructor Ferrari when the time/retired was fuel pressure?

### Accurate SQL ###

SELECT AVG(laps) FROM table_name_93 WHERE constructor = "ferrari" AND time_retired = "fuel pressure"