AI follow/attack zigfu top down user

Hi, i need to get some vehicles attack my player which is controlled by a kinect placed on top of the stage. The cars must be chasing the player and eventually crash with deformation and explosions, like in a madness car nightmare. How would i be able to do that ? i've seen in edy's vehicles physics that the cars are affected by impacts, i would start with these models but i need a simple script to get the cars follow the player when detected by the kinect. I have never dealt with scripting so i'm a bit lost there. Thanks in advance !