In those systems the steer by wire works in cooperation with a mechanical system. Other cars have had backup mechanical steering systems that engage if the stee

In those systems the steer by wire works in cooperation with a mechanical system. Other cars have had backup mechanical steering systems that engage if the steer by wire fails. What's new about the Cybertruck is it _only_ has a steer by wire system with no mechanical linkages at all. But this is being misreported as the first steer-by-wire system which doesn't cooperate with a mechanical linkage- Nissan has done that for quite a while in some models.