I’m a car guy too, and yes it took me a long time to be able to ride in a car longer than 30 minutes.
I’ve noticed that some seats are worse than others, some cars worse than others.
It also took me a good 4 or 5 months post-vas to be able to do even a simple tire swap without being in excruciating pain afterwards, but I did get there eventually.
I used to love suspension and brake work, and although I can still do it, it usually causes increased pain afterwards, so I’ve taken up a newfound interest in electrical, audio systems, things like that, which are certainly easier on the body.
Driving is still uncomfortable for me, but it’s manageable. Heated seats are a godsend.
Hang in there.