The tiny cameras show up a lot in concept cars, but illegal to have in the US. They've been trying to change the law for a while: https://www.caranddriver.com/

The tiny cameras show up a lot in concept cars, but illegal to have in the US. They've been trying to change the law for a while: https://www.caranddriver.com/features/columns/a28120245/car-side-mirror-camera-design/ https://www.caranddriver.com/features/columns/a28120245/car-... (2019)