How to get my train model to move?

Hello,

I am working on making an automatic/AI driven train. I want this train to go for as long as the tracks, seen here, go for.

I made my train model have some functional wheels that are flush with the tracks, connected to the main train model via a hinge, as seen in the below picture.

In testing, I can get my avatar to move the train ever so slightly, but not by much, given the size of the train compared to the rest of the size of my avatar.

I am having difficulty with getting the train model to move on its own. I have tried using LinearVelocity, but the train simply doesn’t move. What do I do?

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