Okay, okay, take a deep breath, no need to panic. Now is not the time for that. Just keep rolling and leave the brakes alone. There you go, just slow down on your own. It's a nice straight road and no traffic so this should be a piece of cake if I just don't get stupid and lose it. There ya go. There ya go. Almost stopped. Heading for the shoulder. That's right.
There! I'm completely stopped. Turn on the blinkers, just in case. Set the handbrake, too. Check. Okay, now look behind. I don't see any debris back there. And there wasn't any vehicle anywhere near me, so what could that have been?