@me2a I can no longer do the things you have shared. I have no answers but can grasp the angst and it hurts. You are not the only one. I can no longer even ride in a car on the freeways. I tried and had to pull over and park my car. I will never try this again.
Do you know what brought this about??

@me2a- Many years back my initial panic attack occured as I was driving over a bridge that I had drove over many times prior and it seemed to come out of no where. I literally felt the bridge getting narrower as I drove over to the point that I felt like I was being crushed.
That was start of what became a long list of "no goes" for me and I was terrified. After seeing a Psychiatrist for several sessions he put me on 1mg of Klonopin. That was the beginning of taking back my life. It began slowly and initially would only drive if my wife was in the car. It took awhile, but I can do all those things that I had checked off my list now. I have been on that same dosage for over 25 years now and have never felt the need to increase my dose. When I fly I take with me a extra half of a pill in case I get very anxious, and over the years I believe I've only taken the extra half dose 1 time. For me just knowing I have it with me is often enough. Same goes for driving (even over bridges) or other things that were on my list. The more I did the more my confidence increased. Thats my story! Don't let fear control your life! Jim @thankful

I too suffered your experience while in car. I would stop where safe, breathe, acknowledge I was having a panic attack and talk myself down. Having Valium always with me was also an option to take if needed. A little something might help to deal with the anxiety once you feel it coming on. Never figured out the why the panic attack, dentist, post office parking lot...but don’t stop living. Get help.