It is difficult or impossible to achieve with current technology.
Magnetic levitation technology mainly refers to the widely used electromagnetic levitation technology. Electromagnetic levitation technology is referred to as EML technology. Its main principle is to use the eddy currents generated by high-frequency electromagnetic fields on the metal surface to achieve levitating support for metal objects.
If a maglev car wants to use the principle of "same-sex repulsion" to achieve levitation, it cannot use permanent magnets with fixed magnetic poles, but must use superconducting electromagnets (which can continuously maintain diamagnetic properties under the action of external magnetic fields) ). But if we want superconducting electromagnets (the current mainstream technology is low-temperature superconducting, although there is room-temperature superconducting technology in China, it has only just applied for a patent, and it is too early to talk about popularization), how can it be used in such a small car? It is a problem to meet the working conditions of superconductors (mainly to provide a low-temperature environment, which needs to be -160°C or lower). In addition, for superconductors to produce strong diamagnetism, the external magnetic field must be strong enough, and the magnetic field of geomagnetic minerals alone is not enough. From this point of view, if we really want to realize a trackless magnetic levitation vehicle, we must rely on other power sources. way to assist. Therefore, according to current technology, it is difficult to apply magnetic levitation technology to automobiles.