| Clue | Source | Date |
|---|---|---|
| What increased speed increases | Newsday | 08 Apr 2023 |
| What automobile interiors may drown out | Jonesin | 15 Sep 2020 |
| *Sound of tires on a highway, say | The Washington Post | 07 Sep 2020 |
| *Sound of tires on a highway, say | LA Times Daily | 07 Sep 2020 |
| *Honking and such | Universal | 26 Sep 2019 |
| *Honking and such | ||
| Motel guest's woe, perhaps | Wall Street Journal | 22 Oct 2016 |