I have them at my college campus. Believe me they are very limited with their abilities and will be a while before they take over the entire delivery workforce. They have limited distance, often get stuck on objects on the sidewalk, get stuck trying to cross the street. I’ve had to save many of the little guys who drove into bushes. One even drove into me as I was going past on a skateboard and knocked me off. They’re fun and cute but not the most effective thing ever.