Spline blueprint not working at all.

Ok so Im trying to make cars follow road using spline in ue4 2.25
but it is not working at all. Here is some screen shots about what have I done:

Hey, here is a link to a project you can download which I used to set up a spline that a vehicle will follow as a loop around a track. It’s a good way to learn how it’s set up. I know it looks like it’s just a driving kart game but in it it had all these other cars driving by themselves.
https://drive.google.com/drive/folde…0ZvU3VCcUNob2c

Thank you!!!