| Clue | Source | Date |
|---|---|---|
| *It's between 16 and 18 years old in most states | Wall Street Journal | 08 Jul 2019 |
| *It's between 16 and 18 years old in most states | ||
| For a full license, it's 17 or 18 in most states | LA Times Daily | 21 May 2018 |
| For a full license, it's 17 or 18 in most states | The Washington Post | 21 May 2018 |
| For a full license, it's 17 or 18 in most states |