"it can land vertically in practice, much like the F-35 fighter jet"
I would say much more like the drones you can buy on alibaba starting at $20.
I would also say this is bullshit. We know battery powered drones can fly their own weight and a bit more for 20 minutes. The thing will have to be huge for that bit more to equal 5 passengers and it looks like it will still take a lot of power to maintain the speed needed to get enough lift from the small wings.
The prototype weighs as little as possible. The downwash on landing barely moves the grass - compare with this
https://www.youtube.com/watch?v=fvwJro4cA8E
for example.
We just had an article about a Chinese drone for deliveries with a 200kg payload and it needed a jet turbine and chemical fuel to provide enough power and range.