I have been considering this design.
Recumbent seating position's lower frontal area is superior to upright position for bicycles and motorcycles and cars.
The seating position is more dangerous in a crash compared to conventional ejection (leap of faith) design. There is no escape from a crash when you are inside the vehicle therefore it requires a (heavy) roll cage.
The weight of the bike can be less than stock vehicle as has been demonstrated by Rohorn.
Handling corners does not seen to be an issue for Rohorn however I wonder if the design has the potential to keep up with upright riders in the turns.
My current thinking is that a reverse trike with recumbent seating position would be the best compromise between safety, light weight and frontal area. It also allows for better streamlining.
I would like to add that the virtual hub center steering is a bit to complicated and turns me off this design. It could be very difficult to get such an unconventional design past an engineer.