Hmm, I just had a glance at it - but max. payload 240 kg - pilot, 2 passengers and gasoline?? The dwarfcopter.....
Just your usual eurotub - nothing strange about it except for the spare seats.
So I see it as a joke - how about the spent cartridges? They would have to in belts.
Or it could just just use a Warp Drive propeller.
Cheers
Erik