Electro-mechanical and electronic apparatus, namely, car radio receivers, audio cassette decks, audio cassette and CD or compact disc and DVD or digital video disk players, changers and recorders; accessories for car radio receivers, audio cassette, compact disc and digital video disc players, changers and recorders, namely, antennas, loudspeakers, amplifiers and pre-amplifiers, blank audio cassettes, compact discs and digital video discs, and car housing therefore; electro-mechanical and electronic signaling and warning apparatus, namely, radar detectors, apparatus for recording, receiving, storage control, checking, and processing and display of sound and image signals, namely, compact disc and digital video disc players, changers and recorders, car telephones, video telephones and fax machines, electro-mechanical and electro-optical coupling and connecting cables and plug connectors and electro-optical interface modules for electronic, electric, and electro-mechanical apparatus, and parts for the aforementioned goods; navigation systems and telematics, namely, and electronic link between motor vehicle and satellite consisting of a global positioning system, cellular communications, namely, wireless network management and optimization software for cellular communications, digital signal processing equipment, namely digital signal processors, sound processors, amplifiers and pre-amplifiers