Would i have Legal issues if i named my iPhone app the same as a current product non-gaming related?

Apparently, the name of my iPhone game is the same as a book written by a non-famous author, the book is about super hero's. My game is not about super hero's. Also, when i search google images, the name of my game shows up as the vehicle, Jaguar's icon.

Would i have a legal issue to name my game the same as a book and a google image that shows up as Jaguar's icon?

The book is alright but image from Google isn't