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_203_838 ( id number, "year" number, "world car of the year" text, "world performance car" text, "world green car" text, "world car design of the year" text )

### Question ###
how many total world performance cars are there for 2007 ?

### Accurate SQL ###

SELECT "world performance car" FROM table_203_838 WHERE "year" = 2007