1. Go to Arcade mode, split screen.
2. Choose Controller 1 as Subaru, and Controller 2 as Lancer.
3. If you have only one controller, hold down PS button and change it to controller 2, and choose the car.
4. Go to the race, and finish the race with only one car.
5. If you have only one controller, you need to change it back to controller 1.
6. Once you exited the racem you can get this trophy.