Doubtless a mutant weapon is very difficult to shake. X shifts position again, bringing one knee up under herself. That (conveniently) puts her toes right up against the hood, which means she can jab in one claw and hold.

And now, of course, she has her hands free.

The real question is--would it be more efficient to try to annihilate the engine, or go after whatever might be driving the car?

Efficiency suggests her position makes option 1 more acceptable, and so X suits thought to action.

What is under the hood?