Well to some extent I think I understand.
I have been without a car for two years and drive extremely rarely. Now when I do I am very nervous. I seem to have lost confidence. I get you about the parking. For me it isn't the highway that is the problem. My fear is driving at night. I too worry about what others might think.
Have you done a "Decatrastrophizing Worksheet" for this fear? I learned these in my own CBT and found them to be quite helpful. I forget about this tool though - thanks for reminding me because I will be driving tonight with a stranger no less and I am really upset about it.
Here is a link to such a sheet. Why not give one a whirl and see if it helps.
https://www.google.ca/url?sa=t&sourc...8RSoFbF9QuGcQN