Yowza!
During my morning commute I saw a boat trailer lose one of its tires on the 134 near Pasadena. The tire skipped across three lanes of traffic then hopped the medium across the other side, bouncing against oncoming traffic. I fully expected a head on collision, but like a Frogger champion the tire skirted danger and rolled all the way to the other side, avoiding about seven or eight lanes of traffic.
I was so amazed with the tire that I found the truck and tow, now being dragged on its axle and shooting sparks, barely interesting. As I passed I managed to get a quick cell shot.