Beware of Big Brother
PHP:
Just because you are paranoid, doesn't mean that they are not out to get you.
Amen! You would be amazed at the info that Feds can pull up on you and your neighbors from your license plate.
One of the basic rules of following someone include when you've been made, an accomplice follows so the subject thinks the following car is no longer following.
I had losing police down to a fine science some time ago. I ticked off one of their stoolie-wannabe-cop-some-day because he had designs on my girlfriend. He tried to impress her by talking about undercover operations that would be going on during the week.
I told some of the targets that if they were into anything to lay off for 2 weeks.
He showed up at my door threatening me. Telling me how I would be charged with interfering with an investigation. I asked him how I should know about any investigation? He wasn't about to tell them he was flapping his gums, trying to impress a girl, so I showed him the sidewalk.
I was followed everywhere I went until I went to bootcamp, later that year. Every day I woke up and looked out of my window, there was a "plain vanilla" police car sitting across the street.
I got pulled over regulary to see if I had a drivers license, which involved a search of my car.
They followed me to work, and college, and searched me often.
I learned their patterns and used them to my advantage. They were thoroughly frustrated that they could not pin anything on me for the month or so before I left, but that was 1980.
When you went into the Evil Wal-Mart, they may have put a GPS transponder on your car. Check the hollows of your bumper.