| Clue | Source | Date |
|---|---|---|
| Race cars, typically | New York Times | 18 Sep 2020 |
| Most bicycles | LA Times Daily | 10 Feb 2018 |
| Most bicycles | The Washington Post | 10 Feb 2018 |
| Most bicycles | ||
| Kayaks and bicycles, usually | The Washington Post | 19 Jun 2016 |
| Mopeds, for example | ||
| Velocipedes, e.g. | ||
| Certain small planes |