Radar displays; Radar machines and apparatus; Radar object detectors for use on vehicles; Radar receivers with amplifiers; Vehicle locating, tracking and security system comprised of an antenna and radio transmitter to be placed in a vehicle; Vehicle location detection system comprised primarily of display monitors, computers, image sensors, and video cameras; Whistle alarms; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Dog whistles; Electrical transducer; Electro-optic transducers; Electroacoustic transducers; Electronic warning bells; Electronic warning horn; Laser object detectors for use on vehicles; Navigation apparatus for vehicles in the nature of on-board computers; Safety and driving assistant system for mobile vehicles and vessels comprised of electronic proximity sensors and switches, high-resolution cameras, integrated circuits for the purpose of imaging processing, and display monitors; Signal whistles; Sirens for vehicles; Subwoofers for vehicles; Ultrasonic object detectors for use on vehicles