If your like me, you probably didn't name your created cars.
They're simply Car 1, Car 2, etc. To rename, go to modify, select
a car, and at the car menu, press triangle. It will ask if you if
want to save and select yes. Then at the save screen go to the car
with the same title as the car you are saving. DELETE IT!! Then go
back to the same space you just cleared, and save your car. Type
in its new name and enjoy being better organized.