As I took my fixie out the garage this morning, I noticed some oddness with the rear tire...turns out I have several patches where I'm down to the threads, thanks to all the Madd Skidz I've been doing. I rode it anyway, but used my brake instead of skidding. Once I'm back home, I'll install a gently used Gatorskin that I've got lying around.
Nice ride this morning, a scorching 15C / 59F for the ride in.