Fascinating article! Thanks for posting it. “Unexpectedly, we found that the rats had an intense motivation for their driving training, often jumping into the car and revving the “lever engine” before their vehicle hit the road.”
My first thought was “how much money did we waste on this study?” but the idea of joyful engine revving rats caused me to LOL and my next thought was “however much we spent , it was worth it just for that image”.