Oh well......
The are profiling the wrong people. Here is a sample from an al qaeda training manual just to show how cunning and well planned their mission are -- they work together in teams "the operative" and "the person conducting the surveillance". They conduct months of surveillance before an operation.
Surveillance by car requires taking certain measures:
1. Inspecting the car's fuel, water, and lights.
2. The car should be of a common type so it would not attract people's attention.
3. The car should be in good condition and the driver should be experienced.
4. The car plates should not contain real numbers. It is important to use a false license plate and small numbers in order to prevent anyone from spotting and memorizing it.
5. The car's interior light should be disabled in order to hide the identity of the surveillance team members sitting inside.
6. The number and appearance of the car surveillance team members should match those of the target's car.
Performing Surveillance by Car:
1. The car being used for surveillance should keep up with the target’s car during the surveillance operation, especially in crowded areas and on side streets. The distance between the two cars depends on the circumstances.
2. If the target gets out of his car and starts to walk, one of the surveillance team members should get out and observe him.
3. Follow all aforementioned measures for surveillance on foot.
Exercises to detect surveillance by car:
1. The surveillance car speeds up then stops suddenly while observing which other car is affected (this is done where there is not a lot of traffic).
2. The surveillance car enters a dead-end street.
3. The surveillance car goes in the opposite direction of traffic.
4. The surveillance car stops and goes backwards.
5. [The surveillance car] enters a parking lot and immediately goes out.
6. [The surveillance car] takes a side road and stops.