Here an information which could be of interest for people (like me) driving (to) fast on french highways:
Pay utmost attention to the cars which are stopped on the rescue lane, it could be a car with some policemen sitting in it!... Don't expect to see a flashing light though as they don't need one (anymore) so even if other cars are driving (to) fast in front of yours it will be of no informational value!
I could not detect any laser beam (in front) nor the typical radar waves so I don't know which technique they used and if they shot pictures or not.
You may be able to drive without any disturbance for many km until the next entry point where a police car will be waiting on you passing by... will be following you for some time and finally will pass you over before to invite you nicely to quit the highway at the next available exit. There all will be ready to cash in what is needed and you will feel much lighter after this type of forced stop!...
Big problem: Foxytag is of no help nor value it that type of radar control as you will not be aware of the threat at the needed time to push the button... Of course one could drive back later and try to pass by again the same point but it would be much too time and money consuming...
All I could imagine as solution would be a way to enter the GPS information (tag) manually based on a map but this will definitely be out of scope until version 25 I guess... Until then the french police will have become much more wealthy.