I name my car’s based on their reg plates. My ND’s plate ends FFX & one of my favourite Clint Eastwood films is “Fire Fox”. So FireFox she was named .
Im a recent Shadow fan, so I must point out that The Shadow isn’t a DC hero. DC payed a licensing fee up till about 1992 when Condé Nast, the then rights owner, increased its fee. However, the Shadow was the original inspiration for the Batman, hence why these two have a special relationship in the comics.