[wave]

I don't especially want a drove[sic] hovering over me wherever I go. What if it crashes into me?

This type of fear is common for any type of new technology. I am sure people had similar fear when automobiles started to appear in the streets. They might have said "what if the car hit me while I am walking". Eventually, we will all get used to it and start to live with risks associated with it.

[kalleboo]

Aren't you agreeing with him? We don't just let anyone drive any homegrown vehicle anywhere with no rules.

Driving is highly regulated. You need a driver's license. Cars need to be equipped with certain safety features which must be inspected regularly. You're only allowed to drive on certain prepared surfaces, etc.