Swarming cop tracking

Would you like to know where cops are lying in wait for speeders as you speed down the highway? Radar detectors are illegal in someplaces and don't always give you enough warning.

I have two proposals for guarding the guardians of law and order.

1. Enable a bluetooth device in each car. It would have GPS and a clock. When you see a cop, you press a button. The device records the location and a time. When you pass another vehicle, it offers this information, and you download what the other vehicle claims.

If you pass by 5 vehicles, and they all say there's a cop ahead, there's likely to be a cop ahead.

2. Enable cars with some kind of cell phone or something, instead of bluetooth. When you press the 'cop' button, the cellphone uploads the time/location data to A CENTRAL PLACE WHERE all subscribers upload cop tracking data. Subscribers to this service can will have their cellphone device automatically load cop position data, so they can be aware of police presence.

If you want to make it really cool, swap out 'press a button when you see a cop' to 'the device will automatically record time and location when it senses radar' in the above.