"Tweenbots are human-dependent robots that navigate the city with the help of pedestrians they encounter. Rolling at a constant speed, in a straight line, Tweenbots have a destination displayed on a flag, and rely on people they meet to read this flag and to aim them in the right direction to reach their goal." And, it turns out, you really can rely on the kindness of strangers. If you're a cute robot. And boy, are the tweenbots adorable.