Hear me out! I got an optical radar device. It works by reflecting ambient light from the approaching vehicles, reflecting it again on an optical surface to then hit my eyes. I can not only judge speed and distance of the vehicle approaching but also size, make, whether the driver already signals they’ll pass me etc. And the best? It needs no recharging.

Its a brand new invention and makes radars look like technology from the 90s. I call it a mirror.