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 results ( fastestlapspeed INTEGER, raceid VARCHAR )
TABLE: CREATE TABLE races ( raceid VARCHAR, year VARCHAR, name VARCHAR )

### Question ###
What is the average fastest lap speed in race named 'Monaco Grand Prix' in 2008 ?

### Accurate SQL ###

SELECT AVG(T2.fastestlapspeed) FROM races AS T1 JOIN results AS T2 ON T1.raceid = T2.raceid WHERE T1.year = 2008 AND T1.name = "Monaco Grand Prix"