I have been keeping up with these guys for a few years. This is going to be big. You can loose several motors with no problem. No danger loading and unloading. Just shut down.
No cool down or run up. Very stable. Could be unmanned. Programmed to fly anyone to work or school while you sleep. Farmers can check their fields, heard cattle and crop dust. No pilot training required later, once drone rules and airspace are allocated. Need better battery or fuel cell technology which is coming. Could use solar and just land and recharge then go on from anywhere that has sun. Maintenance could be done by just about anyone. Motor change out would probably be four bolts and an electrical connector. Ten minutes at most. Everything, plug and PLAY. German engineered and built. Watch these guys.
http://www.theverge.com/2016/4/7/11388406/volocopter-18-rotors-manned-flight-evolo-germany
