Have you driven on the roads recently ??? I seem to remember you're up north so probably not so much of a problem but Melbourne is a permanent car park. When you go anywhere the only place to park is in your own driveway and car parks ! Epworth Hospital $60 for 3 hours
The rail system can't take anymore traffic, and the roads are too packed for buses, so anything that can take some of the traffic away will be helpful and as far as danger, noise, pollution well the politicians are always at least 10 years behind the times so regardless of what happens there will be a mess so lets have a mess we can get a benefit from ?
As to the smaller ones that have already done work on them "swarming" and communicating with each other
In an earlier time I flew the full size things for enjoyment and that was exhilarating
