I watched:
It starts with the McKeen mororcar. Those ran right past where I grew up before I was born. Trophenwagen-era stuff.
But they wedged the nose and rounded the tail.
https://mckeencar.com/
Faster backwards? I can repost my Type II inflato-tail if you like.
edit: I watched yours. A prop-driven monorail at
?t=163!