Goofs

Inside the asteroid, when Daffy demonstrates his talent for levers, he pulls the lever to lower the machine and pushes it to make it go up again. Porky also does so later in the scene. But when Porky and Petunia are strapped in, Daffy pushes the lever forward and the machine still lowers them.

The characters jump into a vehicle it has three pedals, meaning it has a manual transmission. To go, someone steps on the gas only, not the clutch, meaning the car would stall.

Despite being a male duck, there are some occasions in the movie where Daffy lays an egg. It is mentioned later in the movie that he can, though it is hard to do.