When i had my grilfriends car detailed......When he was done the windows were almost invisible. It was impressive. I thought i saw him using a brillo pad to clean the windows?!? Did i see this right and if not what is the best way get my windows that clean.......

 

It is very possible...

I have seen people (and used myself) use a very very fine steel wool to clean windows when there is really caked on stuff that refuses to come off...

 

0000 steel wool works great, I use Scotch Brite wool soap pads, they contain no "steel" and also do a great job.

 

Just make sure you don't use it on tinted windows.