Brake Pad Checkup!

I was changing tires in prep for my next event next weekend.  I usually seem to change out pads and rotors well before they're done since I'm anal about that and do not want ANY downtime on the weekends.  But I knew the pads were getting low, so I figured I'd pop them out and give them a lookover and here's what I found:

Whew; glad I looked!  This was after 3 days and ~200 miles at VIR where my car hits 140+mph twice on each lap!  I think I got my money's worth with these.
Also note that even with the pads this low, driving 10/10th's and ambient in the 101-103 degree range I still had zero brake issues at VIR. 
Thanks AMSOIL DOT4 brake fluid!