traffic violations. strangers shackled tow together by a pair of handcuffs, mobley and morrissey are led towards the bus and the loading wrar. >> when the line of prisoners was getting on the bus, tracy and mary were the last two prisoners of a long line of prisoners. >> and thautsdz when they make their move. >> they were sitting fairly low to the ground. you have to be pretty small to be able to crawl under this bus and then maneuver yourself around so that you are hanging on that train. >> but watch closely. initially they were not last in line. mobley waits for the perfect moment to switch positions. >> tracy mobley was the ringleader in this. there was no doubt she was the one who came up with the idea. she had the felony hanging over her head. mary morrissey was just here for misdemeanor traffic things, which she probably would have just gotten a fine. >> after their disappearing act, a full five seconds ticked by before a sheriff's deputy