In 1909 , automobile race pioneer Barney Oldfield was the first celebrity to endorse Pepsi-Cola , describing it as `` A bully drink ... refreshing , invigorating , a fine bracer before a race '' . In 1909 , automobile race pioneer Barney Oldfield was the first celebrity to endorse Pepsi-Cola , describing it as `` A bully drink ... refreshing , invigorating , a fine bracer before a race . ''