I too have a 1 hr commute both ways in my 98 with cloth seats.
Make sure that lumbar support is cranked all the way forward, maybe get some sort of additional lumbar support to go on top of it and at work.
I'll eventually get more modern seats but I can tolerate it for now.
Now on the topic of back pain, this might seem controversial or counter intuitive. But when I was 17 I was told I had potentially herniated a disc from a gym accident (not really my fault) and told I was in for chronic pain.
That summer I added 100lbs to my squat and deadlift and now years later squat and deadlift in the 500s. No back issues. Studies show a surgical repaired herniated disc and herniated disc left alone look identical after a few years in MRI. Most people if MRI'd right now would have bulging discs yet have no pain.
Back pain is a normal part of life because our vertical spines are a relatively new thing for mammals. So if bulging discs and back pain are a normal part of life, the best thing you can do is strengthen your muscles and by lifting for strength (heavy), your bone density will increase which is absolutely vital as you age (especially for women) to prevent brittle bones (fractures, broken hips etc.) A broken hip past the age of 60 strongly correlates with dying sooner than you would have. Get yourself a heavy squat and deadlift and your femurs and vertebrae will be denser, and your core and back muscles will be strong and this just may relieve your back pain.
My recommendation:
I've been lifting for about 5 years on and off, compete in powerlifiting and religiously consumed lifting content for 4 of those years. If you'd like a pdf I've assembled of the best videos to watch from the best of the best on how to perform lifts correctly, just ask. Your local gym is full of trainers that are only qualified via certifications that take about just 1 weekend worth of studying to pass.
https://www.youtube.com/watch?v=rnpb3gPjlsQ&feature=youtu.be
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