You are right of course but let me try to explain the problem I have.
I see the unusual car and it instantly triggers thoughts of surveillance and monitoring. These thoughts are sudden and stubborn. My nerves start ringing like bells.
After about an hour the thoughts s become fixed to anxiety - real real bad anxiety. Here comes the rub -
my uncooperative brain then starts to ‘punish’ me. I start coming up with ideas to explain why the car has me under surveillance I quickly come up with expansive bizarre explanations (suppose these are delusions of reference). I think these brain processes are common with this condition.
What is slightly unusual about me is how I responder myself for around 2 weeks until I finally burn to these ideas. I obsess about these fears - extrapolating these delusions to the worst possible situation (usually I will become homeless or in prison). My brain plays tricks with me and says ‘IF YOU DONT WORRY ABOUT THESE FUNNY THOUGHTS CONSTANTLY AND DEVESTATINGLY THESE BAD THINGS WILL ALL COME TRUE!’
This basically means I torture myself for weeks until I burn out. I really can’t stop my brain doing this. What’s more the fact that nothing bad happens with the cars (like you say) seems to convince my uncooperative brain that it was the fact I worried/punished myself that stopped anything bad from happening and not the possibility that the car had absolutely nothing to do with me.
These maladaptions keep getting reinforced with every episode to the point where there are fixed like concrete. I have tried all the meds with a slight improvement. Therapy doesn’t begin to touch this.
I am concerned I will just have to live with this as it has become an inescapable process.