Had a close call with two bikers who weren't paying attention.
Out on a long drive recalibrating my cameras in the '21 Model 3 Performance w/FSD, so I wasn't on cruise/autosteer/FSD Beta, just driving manually. I saw this unfold before I even got to the intersection so I was ready to slow down, but still a really dangerous situation. The first biker was so close behind the FedEx truck and so far to his left that he couldn't see me, going 50MPH, approaching the intersection, OR THE LIGHT. So he just followed the truck. His riding partner did see me and the light, and slowed, but I had already come to a near stop and waved him on. This could have been much worse if someone was texting, not paying attention, etc. I have full confidence that FSD and all the on-board systems would have handled this just fine, but since they weren't available while I was re-calibrating the cameras, it fell on me to assess and see the situation well before it occurred.
Please, pay attention. Riding is dangerous enough, don't do things like this and make it worse.