But all these concepts are massively expensive, require safety certification standards for road and air, need dual controls, involve complex folding wings and propellers, and have to be flown from air-strips.
Well, the simple answer is aircraft carriers, people operating on those are Navy pilots, and if their airplane doesn't make it off the end of the runway, they know they're going into the drink.
Do you realise that your government is about to hand over 40 million pounds' worth of housing, building, and harbour installations and an airstrip to a private developer for nothing?