When a vehicle "goes in to reverse," this typically means the driver is shifting the gear selector from a forward gear to a reverse gear. Other phrases that could be used as synonyms for this action might include "puts it in reverse," "switches to reverse," or "shifts into reverse." Other alternatives could include "backs up," "reverses direction," "moves backwards," "drives in reverse," or "rolls back." Depending on the context, some of these phrases may be more appropriate than others, but all of them imply that the vehicle is now moving in the opposite direction from its previous heading.