Re: Autorotate to where?
Probably a corner of some car park, re-designated an aerial taxi dropoff point. Can only follow routes with a continuous supply of such.
It should be easy enough to specify a deployable paraglider or similar controlled-descent device, with independent control system and say 10 mins power supply, for use when the main flight power fails.
It might be a touch less easy to implement such a system and get it certified.