This is very cool. Apparently it can handle even two prop failures and still make a safe landing
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With the way I “drive”, I need all the safety features available. 
A quad copter is not an hot-air balloon 
@ Reinhard Ostermeier - Unless my children are in it, I drive everything like an indestructible tank!
Another one of those things that when you see it seems obvious and then you think - “why didn’t I think of it first?”
Exactly… I fear going to lunch with him sometimes.
sounds like what Amazon needs… 