I'm wondering if you were directly west of Hwy 20 near I-5.
When we were driving to Winthrop 10 days ago, we were directly behind a very inebriated (small) truck driver who started driving slowly, erratically, took out a sign, then proceeded to lose his retread off a rear tire. Did he stop for any of this? Nah.
Unfortunately we didn't have a cell phone but someone must have because the cops followed him.