At first, I thought the set up was too obvious. He would create the time machine and go back in time and take the cake. I then realized that wouldn't have made much sense with the context of the cartoon. I'm so glad you did something different. The animation was great. I'm glad to be introduced to this series.
There's not much CGI stuff here. It was short, but got its joke across. I always love that. He kind of reminded me of Blendin from "Gravity Falls". You know, with the time traveler wearing goggles.