Can only Citroen cars lift the chassis? And is the chassis lifting a Citroen patent?

At present, chassis lifting can be divided into automatic or manual. Manually use adjustable hinge damping or computer-controlled air spring damping, in which hinge damping is cheaper, thousands of dollars, while air spring damping is more expensive. According to the computer and sensors, vehicle bumps and chassis ups and downs can be filtered. Citroen is not the only one with this function, but Citroen does have a patent, that is, the rear wheel servo system, which means that the direction of the front wheel is that the rear wheel will turn slightly according to the direction of the front wheel, so the cornering performance is very stable. At that time, Citroen Fukang was known as the king of corners!