| Clue | Source | Date |
|---|---|---|
| Up-and-down passageway | Wall Street Journal | 06 Oct 2026 |
| Cars move up and down in it | Premier Sunday | 26 Sep 2021 |
| Where a car moves vertically | USA Today | 17 Dec 2018 |
| Where a car moves vertically | ||
| Where a car goes only up or down | Eugene Sheffer | 03 Jan 2015 |
| Where a car goes only up or down | ||
| Where a car goes only up or down |