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As in most industries, car radio designers have long envisioned a product which could be sold without modification throughout the world. However, local requirements, performance differences, and customer preferences have presented major obstacles to achieving this goal. Since publishing a previous paper on this subject in 1983, many changes have taken place in electronics and in car radio design. Some of these changes have reduced the barriers to producing a “World Radio” while others have presented new obstacles to be overcome. This paper addresses some of those changes and the current possibilities.

Advances in digital and analog electronics have drastically changed car radio circuitry. Improvements in miniaturization of electrical and mechanical components have radically altered their size and styling. Computer modeling of the vehicle's interior environment has optimized car radio acoustics. It seems that the list of modern break-throughs is never ending. It is the intent of this paper to show that many of the technical marvels of today's car radios were first applied years, even decades, ago. From those early concepts, and their current revivals, a projection into the future of automobile radios will be made. As previously mentioned [1]: “If history teaches anything, it teaches the potential for repetition.”