Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_20090682_4 (vehicle VARCHAR, top_13_time VARCHAR)
### Question:
how many vehicles where top 13 time is 1:18.72
### Answer:
SELECT COUNT(vehicle) FROM table_20090682_4 WHERE top_13_time = "1:18.72"