Dave12345
dyf
JaccoG
Mosca
lol, dyf got my vote.
no one else was able to balance his/her truck with only one axis. 
Hi, if you are looking to rig and animate a semi-trailer truck, this tutorial will help you out Here is a tutorial that will teach you how to rig and animate a semi-trailer truck in blender 2.83 https://gachoki.com/how-to-rig-and-animate-a-semi-trailer-truck-in-blender-2-83-in-8-minutes/