How can I create vehicle ai?

I am trying to make a simple racing game for a university project, utilizing the Time Attack Racer tutorial as a base. However I running into a couple issues. The main one of discussion here is how to implement and create vehicle ai’s to race against. I’ve tried transferring over Peter L. Newton’s Ai example to my Advanced Vehicle Blueprint, but have had no luck making work. I also tried a spline based tutorial (Unreal Engine 4 Vehicle Spline Path FollowTutorial - YouTube), however it only focused on automated steering.

Does anyone have any pointers or ideas as to how I can create vehicle ai?