Howdy Super and Muddy Poppins!
Those wobbly trucks came in a variety of sets, and colours, from Plarail! To be honest, I don't ever remember that the trucks' loads could be removed from them; some sets and packs that included these were the Plarail Forward-and-Reverse Thomas set with the Sodor Search and Rescue Center, Percy and the Wagons set(included first Plarail release of non-motorized Rocky), a second release of the Pounding Mountain set, and a few other sets whose names elude me at the moment.
Hope this helps!
Those wobbly trucks came in a variety of sets, and colours, from Plarail! To be honest, I don't ever remember that the trucks' loads could be removed from them; some sets and packs that included these were the Plarail Forward-and-Reverse Thomas set with the Sodor Search and Rescue Center, Percy and the Wagons set(included first Plarail release of non-motorized Rocky), a second release of the Pounding Mountain set, and a few other sets whose names elude me at the moment.
Hope this helps!
Residential train-afficionado in training, and Thomas & Friends fan.
![[-]](https://www.blueplastictracks.org/images/collapse.png)