Roam-e Prototype Available in 10 Days, page-91

When the battery is about to die it is programmed to gentle drop to the ground so doubt this would cause injury to anyone.

In reality I don't think people will use them in crowded places because it will be too hard for them to manage it. And if too many people were to use the in crowded areas they would just be banned. It won't surprise me if I'm the next two years many public areas will have "no roam-e" signs around.. That will mean the product has made it