Object animate and deform follow path not working I hope you are having a great day. 

I am following a tutorial to make an object, in my case something that will eventually be modeled into a bendy bus or tram, and at one point I followed the tutorial and it worked, even in 2.79b and 2.8, but I have since been unable to get it to work. 

What is happening is that as I set up the triangles using the offset and then creating single user out of each, when I click play, they all return to their origin. In the video, they stay where they are. 

I have watched the linked video many times, but I cannot get it. I have linked to a blend file to show what I am getting at.

I am aware there is a similar question, but I only want the object to deform in specific places. 

Thank you very much.

The video tutorial


The blend file
I figured it out. I had a serious middle-aged moment. As each new triangle is added, it needs to be keyframed in. Doh!