We left a race and got about 3/4 of a mile before my husband realized he wasn't wearing his shoes once... and those were his street shoes. I'll bet those poor folks took their cycling shoes off their aching dogs and set them down outside of the car only to forget to put them in. That probably goes for the wheel as well. Took it off to put the bike on a roof rack and forgot to put it in the trunk. That's why we always do a walk around the car before we leave a race or ride these days.