What Should I try and Calculate?

After Doing some good research on many forums and web sites, there are several things I want to consider for this AI.

Before Anything, check This site and look at these different algorithms:
Obstacle Avoidance
Containment
Wall Following
Path Following
Flow Fields

All of these show several important tools that I could use in order to create the AI, out of all of these, the ones I like are Containment, and Flow Field, but both of them seem to have things that I don't like.

The Good:
In Containment I like the fact that it smoothly prevents the collision with the walls
On the other hand, flow field looks a lot more natural, I like the effect all those vectors give to the car.

The Bad:
Flow field seems extremely complex to create a map for, you would have to add thousands of vectors per map, and that doesn't seem two efficient.
At this point, containment seems to be the most appropriate method, althou I still want to test it on a more complex racetrack.