As I know there are a few F1 fans here - besides me, this link below is a Q+A with Pierre Dupasquier of Michelin - he is the worldwide competition director. He was at the F1 race in Monza over the weekend.

What follows is an explanation about how competition against another tire brand is good for racing, and also lays the groundwork for explaining why Michelin never bid on the WSB control tire contract which Pirelli won.

Towards the bottom, there is a even a neat blurb about the Pilot Power street tires.

http://www.planetf1.com/news/story_20801.shtml

BTW - Monza was Sunday and it was a very good race!