Again, I will. Perhaps it's a matter of opportunity, and my level of immediate interest. I am not all that interested in converting you.
But, Spork has made a video of the cart without a prop, and what do you know, the calculated forces are exactly what I predicted.
If the TM were to represent a cart in the wind, then 10mph could be achieved with a force of 0.05N. Not at all possible, so the TM is wrong.
It's a repeated mistake. That happens when ideas are copied, and there is only one source - Bauer, and his papers are not correct.
It seems the TM works only in one dimension, so can't be a transform of a cart on an incline. The question is why do you even think a demonstration from me is at all necessary?
You would need to think Voodoo is at work to explain away the obvious facts, and to hold on to what is clearly a belief.