From last June,
http://choosingscars.blogspot.com/2007/06/when-hot-rod-customizer-builds-tribute.html#links
Rod and Custom online doesn't have anything on Back Seat Betty, but if you do like custom jobs, here are some wallpapers they do have for you http://www.rodandcustommagazine.com/wallpaper/rc_freestuff/index.html
http://www.youtube.com/watch?v=2OUvFCw8QXA&feature=user