I'm in love!
Actually in Russia they have made all manner of propeller driven vehicles since the early days of motoring, some quite large, to carry 6-10 passengers. Fine for travel across the Steppes, and the long straight roads of the Ukraine, but in my opinion this is "almost" the perfect for London, regardless of what the D.of T. and SVA might think
I say "almost", because the prop SHOULD be on the front, and unshielded. That might start teaching all "those people" a lesson.
"Those people" being the multitudes who think that if they are gabbing away on a mobile phone, the best place to walk around gabbing is in the road or cycle lanes !