| Clue | Source | Date |
|---|---|---|
| Motor contests with a portmanteau name | New York Times | 13 Jun 2020 |
| Bus meets, e.g | LA Times Daily | 22 Jul 2017 |
| Bus meets, e.g | ||
| Bus meets, e.g. | ||
| Truckers' contests | ||
| Truck-driving competitions | ||
| Competitions that might conclude with the semi finals | ||
| Trucker's competitions |