Last weekend I was caught in heavy traffic on the interstate and a Suburban in front of me kicked up a hefty chunk of tire debris. Luckily it didn't hit the hood but did hit my windshield. Now I've got a couple of nasty black rubber marks that won't wash off or come of with glass cleaners like Windex.

Anybody got any good ideas on how to remove these scars?

 

Nevermind.. Finally got it off with some acetone.