More of a reminder to myself, but as this happened to me I thought that I would put it out there.
I had 4 new tyres put onto my van the other weekend but stupidly didn't check that the garage had put my hubcaps back on properly before driving off; they hadn't. When I got home I found out that one of my hub caps must have come loose on the drive back.
Re-traced my steps but unfortunately I couldn't find it on the side of the road.

Lesson learned.
Thanks
Nathan