For my '06 LS 430 I'd like to get installed a Cross Traffic Monitor. Sometimes if I'm parked next to large SUV's I can't see to back out on either side. This device would help. Cadillac advertises one for their cars to avoid a collision. It buzzes of vibrates in the driver's seat to signify a car going behind the car. Anybody know about an aftermarket product. Thanks, Retperio