tat paint stripper?

I have been sanding my car for the past week. But the guy who owned the car before me must of painted this car with some garbage a$$ paint cause there's little cracks allthe way down to the bare metal. So my qeustion is has any one ever used it on a car?
I have used used it my bike a couple times and it does work. Any thoughts?
I have used used it my bike a couple times and it does work. Any thoughts?