TechnophobicG 25

For this one, you need to pick up the power up that looks like a pair of white electric paddles on a light blue background, and use it on any other racer 20x. It has a limited range, so make sure you're close to the other racer when using it. This should come naturally while doing your 2 career runs, but if not you can finish it up in split screen/free roam with a second controller.