I can't find the file

Sadly this doesn't really work for the new Vanilla Control Buttons. They visually get moved but the interaction position stays at a static position :(

Is there a way to attach an object to a spinning coaster car so that it spins as the car would?

On which car and where exactly the objects attach depend on some internals of NL2, some coasters types use zero cars for example, that's why you might encounter offsets.

I'm loving this, but there's an issue I've encountered - Objects attached to car 2 move with car 1, rather than car 2. Every car attachment after the first one is off by one. Riders can be placed, but they go way out of the bounds of the vehicle constantly, as long as the train is moving. I have "fixed" this by bouncing off of a higher number car, and shifting the XYZ coordinates to place riders in the previous car. This works, but car 7 has no physics of its own, it just uses the physics of the 6th car, and there is no 8th car for me to bounce off of. Still, it looks amazing to finally have riders in my coasters! Thanks again! Please fix this if you can!!

So I attached a Gyro tower to my coaster