How do you remove spray paint from a car?

My navy blue car was spray-painted (vandalism) two nights ago with black paint. I would like to know a cheap, efficient way to remove the taggers work. Thank you.How do you remove spray paint from a car?
I had this finish restorer made by 3M that you can buy at Walmart, try that with a normal rag at first. For the more thick area, you may to use a scrub pad with plenty of this stuff lightly to work it out. It will take time, but is less aggressive than paint remover.How do you remove spray paint from a car?
Give WD-40 a try. It disolves just about everything. Just try it on a small spot somewhere first (like inside the door jam) to make sure it doesn't harm the original paint. It should be fine but check anyway.
I suggest using ether thinnner or gasoline, I used ether thinner to remove the black paint from the decals on my truck and it worked great without messing up my paint, I've used gasoline to remove spray paint from other paint before too. Good Luck