The mystery of the pen

A young friend recently shared a mystery with me: How could a pen land in the middle of the road (our road), not at a driveway, not near an obvious stopping point. David (the friend) thought it might be mine because I bike down the road, but not so.

I had another thought, David. Maybe it landed after it fell off a car? I admit to sometimes leaving things on top of my vehicle, and they land wherever gravity gets them...

Anybody have any thoughts?