Tony Stewart is anxiously waiting to find out when he will be able to return from a broken back to debut in what is supposed to be his last season as a full-time NASCAR Sprint Cup driver. ''Then (doctors) will be able to have an idea of when exactly it's going to happen,'' Stewart said. Until then, Stewart will continue in his role as co-owner of Stewart-Haas Racing while Brian Vickers and Ty Dillon share the role as the replacement driver in Stewart's No. 14 Chevrolet. More...