I did not find anything to explain the trailing extra wheel on this early Holsman high wheeler, or the streamliner body

https://www.fayobserver.com/picture-gallery/news/local/2024/03/12/from-the-archives-along-fayettevilles-raeford-road-over-the-years/72884744007

this was how the solid rubber was attached to the rim https://www.youtube.com/watch?v=0fgtF5vB90A