In 2019, rats drove handmade cars at the University of Richmond, steering left, right, or straight to reach Froot Loops in a complex test

Researchers trained rats to drive small cars for rewards. Rats housed in enriched cages learned faster and showed continued interest. Driving appeared to reduce stress hormones in the trained rodents. Many rats preferred driving over a direct walk to the reward. These findings offer insights into stress, environment, and brain function.