Level 1-4 is the fourth level in Ground Hog Day and Bad Piggies.
To beat the level, do one of the following:
Place the pig in the lower right corner of the build grid. This should yield a star box.
Place the pig in any other space. This should give a star for the four-second finish. It is recommended to place the pig in the lower left corner for this, but technically any space will do.
Doing both will give you three stars.
There is no driving phase for this because the only item given is the pig. Simply drop him to the finish.