| Clue | Source | Date |
|---|---|---|
| One might read "FASTCAR" | New York Times | 07 Jul 2025 |
| One might read "S3XY-GRL" | USA Today | 24 Nov 2024 |
| Doc Brown’s reads “OUTATIME” | Wall Street Journal | 27 Nov 2021 |
| Car's custom ID | Newsday | 22 Jan 2017 |
| Customized item for an expressive driver | The Washington Post | 07 Apr 2016 |
| Tag with a message, often | ||
| Barbara Bush's "I READ," e.g. | ||
| Deliberately chosen vehicle ID |