Head on over HERE and get your free sample of Invisible Glass Wipes.
I got these a few weeks ago and have put them in the car so that when you get that sun glare/dirt on the inside of the windshield thing I now have a way to fix it!
Also came with coupons and there are several rebate offers on the free sample page too. I am going to use the $2 rebate. That combined with the coupons that were sent with the sample should make for a good deal.
Took about 4 weeks to arrive!