There are several synonyms for the phrase "arrive by car." Some of the most common alternatives include "drive up," "roll in," "pull in," or "park." Additionally, less conventional synonyms for "arrive by car" might include "cruise in," "wheel up," or "motor up." Depending on the context, some of these alternative phrases may be more or less appropriate. For example, in a more casual setting, "cruise in" or "wheel up" might work well, while in a more formal context, "arrive by car" or "pull in" might be preferred. Ultimately, the right synonym for "arrive by car" will depend on the particular context and tone of the message.