Mechanical motion predictions

[SirLAL]

Hello, I just want to say this tool is wonderful. I have tested on a variety of human and animal photos and seems to work quite well. I've tried to use a toy tank to see if it could predict the track tread movement and it did nothing with a number of different prompts. I can get the tank to move, but it looks like it slides around. Do you have any suggestions for this to work, or is it beyond the models understanding?