If there’s one thing fish owners hate, it’s that their pets don’t move around the house enough. Thankfully, there’s now the new and improved, fish on wheels. The original version debuted in 2014. It works by detecting the direction in which the fish is swimming. It then uses that data to steer the little cart that holds the aquarium. Now, I’d like to see what happens if you put it in a room with a cat.

Source: Geekology