If you notice cars always following you and usually big vehicles, security people favor large vehicles. Get a $55 gps-spyware detector and check your vehicle quick and easy yourself. I found a tracker, a yellow cylinder setting off my detector under my brake pedal. A mechanic was asked to remove it, AFTER 45 minutes, he came back and told me it wasn't spyware, and i replied it set off my spyware detector. When i left, the detector was gone. These people descend to the lowest levels they can achieve to win. GPS detectors are becoming common in unsuspecting peoples vehicles.
If law enforcement has them attached, it may even be illegal to remove them. Its sad the lines between law enforcement and criminials is becoming blurred.
