The small parts, known only to experts, have played an important role in the motor function of the body..... Fortunately, I have never suffered from back pain. elements something role painful I think that one of the reasons is that I had few opportunities to drive a car. Since the weight of several tons or tens of tons is controlled with both hands, the burden on the lower back may be unimaginably large. Automakers have been hiding that driving is crushing the hip bones. However, if autonomous driving systems become widespread and drivers no longer need to hold the steering wheel, back pain caused by driving a car will be eradicated. One person suffering from back pain said with his hands on his back: back pain is painful because the nerves are exposed due to the loss of something between the bones of the lower back. Something like that is probably cartilage. Alternatively, it may be something like a thin film. In any case, it’s not the main a...