Thank you for contacting our support team. "Unlock All The Cars" unlocks all current and future purchasable cars. The cars that will not unlock are the Fruit Ninja Buggy, Sleigh, LeDorean, Touring, and Roadster. These are only able to be unlocked by playing through career mode e.g. In the Original Championship, Bonus Championship and Extended Championships. So the only way to unlock these cars is to win the championships where it says to unlock them in. You can see this by going to select the car and it says "Unlock in Original Championship".