What chassis does Gary Bettenhausen use?
CREATE TABLE table_name_13 (chassis VARCHAR, drivers VARCHAR)
SELECT chassis FROM table_name_13 WHERE drivers = "gary bettenhausen"
### Context: CREATE TABLE table_name_13 (chassis VARCHAR, drivers VARCHAR) ### Question: What chassis does Gary Bettenhausen use? ### Answer: SELECT chassis FROM table_name_13 WHERE drivers = "gary bettenhausen"