Even before helicopters we had Santos Dumont flying his dirigibles down Paris streets and stopping for coffee. :) Like dual purpose amphibious vehicles and sea

Even before helicopters we had Santos Dumont flying his dirigibles down Paris streets and stopping for coffee. :) Like dual purpose amphibious vehicles and seaplanes , it's a case of possibly useful for very small niches, and maybe electric power, VTOL and not needing the space a single rotor aircraft takes up creates a niche for this vs other similar concepts. But ultimately the economics of long haul flight, accident rates of GA and regulator intervention have all moved aviation further from the 'flying car' model than powered flight demos from nearly 120 years ago, and not through lack of innovation.