NOTE: You can get Three-stars in more than one run. Once you earn a star, you keep it, so that you don't have to worry about earning about the same star when you try to get the other one.
Create a Three-long cart (Like the one above) with a Black Soda Bottle on the left and all three Green Soda Bottles on the top (Unlike the one above).
Use first One of the soda bottles, then the remaining ones.
To three-star this level, You must use the same exact vehicle on Level Finish.
To three-star this level you must do the same exact instructions on Level Finish.