I garage my car in the winter and my dumbass didn't think to check to see if I ran anything over the last time I took it out after a wash. Unfortunately I ran over something and its been sitting on my car for a good 5-6 months. Its like a rust color and is splattered all over the bottom of my car (on the paint but the lower half). At first I thought it was rust but then I picked at it and it started coming off, then I saw the rest of the splatter spots on the wheels, sides, etc. I have NO idea what this stuff is, I scrubbed and tried to clay it with no avail. Any ideas?