Lots of training.
I don't know but that reminds me of a similar joke my uncle used to tell...
SECOND PIGLET: He signs his letters with lots of hogs and kisses.
One costs a lot of money to maintain, keep running, and give you the results you want. The other has four wheels.
It makes his Dagobah faster.
In the cow-boose.
Because they were trained.
A LOCOmotive.