How many seasons was clay regazzoni the driver?
CREATE TABLE table_10753917_1 (season VARCHAR, driver VARCHAR)
SELECT COUNT(season) FROM table_10753917_1 WHERE driver = "Clay Regazzoni"
### Context: CREATE TABLE table_10753917_1 (season VARCHAR, driver VARCHAR) ### Question: How many seasons was clay regazzoni the driver? ### Answer: SELECT COUNT(season) FROM table_10753917_1 WHERE driver = "Clay Regazzoni"