CREATE TABLE table_2268216_1 (year VARCHAR, team VARCHAR, manufacturer VARCHAR)

How many years was Pontiac the manufacturer for Joe Gibbs Racing?
SELECT COUNT(year) FROM table_2268216_1 WHERE team = "Joe Gibbs Racing" AND manufacturer = "Pontiac"
SELECT COUNT("year") FROM "table_2268216_1" WHERE "Joe Gibbs Racing" = "team" AND "Pontiac" = "manufacturer"