This Duckiebot is the fourth generation self-driving car of the Duckietown project, initiated at MIT in 2016 and now used for education and research in 58 countries. Equipped with a front facing camera, time of flight sensor, IMU and wheel encoders, in addition to a screen, four addressable RGB LEDs and a custom designed smart battery providing live diagnostics, this differential drive vehicle can be powered by NVIDIA's Jetson Nano 2GB or 4GB models. Within the fully programmable smart Duckietown urban ecosystem, featuring extensive online documentation, a simulator, logs, an international scientific competition (AI Driving Olympics) and a dedicated free massive online open course (MOOC), Duckiebots make learning state-of-the-art single and multi-robot autonomy accessible and fun. (Available worldwide)