Mercedes-Benz and Garmin smartwatch could tell your car how stressed you are

German auto giant Mercedes-Benz has teamed up with Garmin to create a smartwatch that can feed important health data back to your car in order to provide you with a calmer, more enjoyable experience.  Unveiled alongside the new, tech-enabled 2020 CLA Coupe at CES 2019, the smartwatch will be a Mercedes-Benz-branded Vívoactive 3 GPS. The …