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_99 (laps INTEGER, grid VARCHAR, time_retired VARCHAR)

### Question ###
How many laps had a grid of greater than 17 and retired due to collision?

### Accurate SQL ###

SELECT SUM(laps) FROM table_name_99 WHERE grid > 17 AND time_retired = "collision"