Awhile back (like over a month ago) I went out to my car in the parking garage at work and discovered some black dots on my windshield. My first thought was that it was tar - I don't remember exactly why I thought that but I did. So a week or so goes by & I finally get bug & tar remover. The day I try it, it's very windy so I didn't have much patience...basically it didn't work at all. Another few weeks (or so) pass & yesterday I FINALLY remember to get a flat blade thing (sure it has some technical name) at Lowe's. After work today, even though it was windy, I went out to see if I could scrape off the dots - as they are hindering my windshield wipers a bit. First I'd like to say that I apparently chose a cheap-ass blade way flimsy..but I digress. I am looking at one of the "dots" & I scrape it - the black comes off but I can still see a dot. So I scrape a bit more but nothing changes - I feel it with my finger and look very closely - it appears whatever this black stuff was might have damaged the windshield.

Ok now that you have the story...any other brilliant ideas out there to try to get this stuff off assuming it didn't ruin the glass & it's really just stuck on there?