Techify on Instagram: "In the late 1970s and early 1980s, Cadillac offered a clever analog outside temperature gauge built directly into the driver side mirror. Instead of relying on early electronics, the system used a small bimetal thermometer that drivers could read instantly through the mirror glass. It appeared on luxury models like the Seville, DeVille, and Fleetwood, providing real time ambient temperature long before digital dashboard displays became common. Lincoln also adopted a simila