Any one using the K-40 Bluetooth
Are you expecting to get the front and rear version?
I just don't think the rear one is practical, except to tell you that you've already been hit?
Most cars approaching from the rear can/will "clock you" by going the same speed. Radar/laser isn't even needed. The "traps" that you want to try and avoid are from the front where hopefully you can detect or defuse the system.



