Found the following at the bottom of https://lilium.com/news/

What makes it so safe? Safety has been the top priority from day one of Lilium’s development. We’ve incorporated the concept of what we call ‘ultra redundancy’. The aircraft is designed such that it does not have a single point of failure, which means any component can fail in any flight condition and the aircraft will always be able to do an ordinary vertical landing automatically. The objective behind this concept is to make flying a Lilium Jet as simple as driving an electric car. At the same time, we provide an unprecedented level of safety both through a failure-tolerant aircraft and through avoiding pilot errors in stressful situations. For the duration of the flight, the software’s Flight Envelope Protection system rejects unsafe pilot commands. No matter what you do as a pilot, the system will always maintain safe flight conditions. Additionally, the Jet is equipped with a whole-aircraft parachute.

Helicopters can autorotate, planes can glide. like the Moeller contraption, this type of thing falls. I would insist on a ballistic parachute.

It has one, though I'd go further and insist it have a deployment mechanism that does not rely on any computers or complex electronics.

I'm sure it would be none-too-pleasant for the person flying inside it, either.

But that's their choice, not mine ;)

Besides the obvious things like seat belts, airbags, &c, I'd hope these have those whole-vehicle parachute systems you see on some small private planes.