Now that the technology is so inexpensive, we need to have them in cars!
I wonder how soon a car would be able to publish its metrics, like speed, motor rpm, data from ABS and brakes, etc via a protected Bluetooth channel, so that a dashcam or a phone could keep recording it, like the black box.
You can already get those metrics from the car's OBD2 port.
There are even dongles which have Bluetooth so you can see/record the metrics on your phone, so it shouldn't take much to get them on a dashcam.