Vehicles

Tobkar

how to make a custom vehicles, in wiki not about create vehicles

LoneDev

Check the examples.
For example carts: https://github.com/ItemsAdder/OtherPacks/blob/816f9189d3e83d7e2bebfd3a3d98484b19a4d834/contents/iavehicles/configs/ground/go_carts.yml