“Driving Miss Daisy,” the final show of the Gloucester Stage Company season, has opened, but theater cofounder Israel Horovitz won’t be seeing it. For the first time in the theater’s 34-year history, Horovitz will miss every show this summer. That’s because he’s busy prepping his directorial debut in Paris. In two weeks, the celebrated playwright will start shooting the big screen version of his play, “My Old Lady,” about a penniless New Yorker, played by Kevin Kline, who inherits an apartment in Paris only to discover that it’s occupied by a elderly woman, played by Maggie Smith, and her daughter, played by Kristin Scott Thomas. (Originally, Jane Birkin was set to play the daughter.) Meanwhile, “Driving Miss Daisy,” starring Oscar nominee Lindsay Crouse, is at the Gloucester Stage Co. through Sept. 22.