When I was watching the Fox Fall Preview show, I saw the Sunday segment and it showed a brief preview of American Dad. It showed Roger going through a tunnel and the voiceover said "Roger's tracking down a serial killer".

Could this new episode be another Wheels and The Legman? I love how Roger and Steve are Wheels and the Legman, I hope it is! Last season's episode of that where Stan was 'Poppa Wheelie' was hilarious! can't wait for it!