| 2026-08-13 | Drinks at a pub |
| 2025-10-23 | Wheel connectors |
| 2025-06-19 | They keep the wheels turning |
| 2023-01-09 | Connections for car wheels |
| 2022-04-27 | Three or more on a semi |
| 2018-11-17 | Couple on the road? |
| 2018-06-25 | Toll units for semis |
| 2017-10-16 | Highway tolls may be based on the number of them |
| 2016-12-13 | Wheel connectors |
| 2015-09-30 | Trucker's toll factor |
| 2014-06-02 | Ones keeping the wheels turning? |
| 2012-01-09 | Car rods |
| 2010-11-01 | Connections for car wheels |
| 2007-04-08 | Some toll units |
| 2004-02-16 | Wheel turners |
| 2004-01-25 | Car bars |
| 2002-10-09 | Cars' bars |
| 2001-05-05 | Bars on wheels |
| 2000-05-09 | Wheel turners |
| 1998-09-19 | Highway toll units |
| 1994-08-19 | Turning points |