Williams wasn't going to wait for that to happen. He decided to separate the two, opting to remove the driver first. Williams wasn't naïve enough to think he was necessarily safe dealing with the man. But as the driver had thus far displayed a greater degree of cooperation, Williams was willing to gamble that the driver would prove less a threat than his passenger.
Positioning the driver with his back to the car, Williams prevented any further signaling or communications between the two and allowed himself to keep a wary eye on the passenger. After conducting a thorough pat down, Williams sequestered the driver in the backseat of his patrol car.
Williams sat down in the driver's seat of the patrol car and was about to talk to the driver when a curious thing happened: the Bonneville sped off.
Cursing himself for not having had the driver take the keys out of the ignition, Williams radioed dispatch that he was going in pursuit of the Bonneville with its original driver detained in his backseat.
The cars sped off, negotiating a series of turns that eventually found them cutting back northbound on a service road, just below where Williams had made the original stop on the bridge of the interstate. Throughout the pursuit, the fleeing Bonneville made several ditch maneuvers, suggesting to Williams that the driver was thinking about jumping out.