Hi Tom
About the road- ready plane, it can do many differents things:
can park it in the garage, and drive it to the nearest airfield, fly it to the destination, or land it , is very is very practical to use, the disadvantage is they can't drive in a way with obstacles.
It is smaller than a plane (including the smallest), and it is faster and economic, because the tank holds 76 litres of super- unleaded petrol.
In mode car, it can go 17 km per litre of fuel, can travel at normal car cruising speeds, but is not bigger than a normal car and dont have space for luggage .
You should buy this, because this car have more advantages than disadvantages, is economic, compact and a modern option of the innovation of the technology.
Best Wishes, Tom.