CREATE TABLE table_name_94 (date VARCHAR, circuit VARCHAR, class VARCHAR)

Which date was held at Laguna Seca Raceway, in class GTX/GTO?
SELECT date FROM table_name_94 WHERE circuit = "laguna seca raceway" AND class = "gtx/gto"
SELECT "date" FROM "table_name_94" WHERE "circuit" = "laguna seca raceway" AND "class" = "gtx/gto"