Hi Thanks for posting on HCM Given the nature of your job, your symptom could be caused be too much and prolonged pressure on your buttocks.Other causes of soreness around buttocks may however have to be excluded if the problem should persist. Other causes though less likely may include: neuropathy,diabetic neuropathy, ionic imbalances etc Since changing job might not an option, i will advise you make your car seat very soft,get enough best, eat well and healthy, drink enough water. If symptoms persist after these measures, you see a Doctor for investigation. Hope this will help Regards