I saw and was sharing this privately just a few hours ago. It led me into a bit of a rabbit hole, where I stumbled across Etak: https://en.wikipedia.org/wiki/Et

I saw and was sharing this privately just a few hours ago. It led me into a bit of a rabbit hole, where I stumbled across Etak: https://en.wikipedia.org/wiki/Etak https://en.wikipedia.org/wiki/Etak The original Etak Navigator was a specially-packaged Intel 8088-based system with 256K RAM, 32K EPROM, 2K SRAM, and a cassette tape drive on which digital maps and some of the operating system were stored. The tapes could not hold much information, so for the Los Angeles area, for example, three to four tapes were required. When an edge of the map was reached, the driver needed to change cassette tapes to continue benefitting from the accuracy of map-matching.