<p>Appendix A p.1 Cellular communication technology has added a new dimension to driving a vehicle. In addition to being able to receive voice and music signals through the car radio, the vehicle driver is able to participate in separate two way telephone communications. The coincidence of these stimuli can create an unacceptable or dangerous situation. This new device is designed to interface between the car stereo and the cellular telephone. It is designed to interrupt the sound emanating due to the normal operation of the car stereo upon reception or placement of a cellular phone call.</p>
