Idk that was just to give an idea of how specific you could get. Usually people put in quite a bit of research before choosing a title. You're even allowed to change the title in the early stages of creating your EPQ after conducting more research.
From what I've been told by my lecturers, it is better to chose a title that sparks debate where you can argue 2 sides of a topic and come to a conclusion rather than choosing a title where you just talk about how an airbag works for example (maybe debate the materials used by different manufacturers of airbags instead? idk)
Anyway, good luck with choosing a title.