Long ago. Molt Taylor produced his Aerocar, approved by the government for production and operation on road and air, in 1949. Earlier efforts date back to 1937 and before. All this seems new when you don't know the history.
No rational objection to being approved for operations on both ground and air. Do you want the vehicle to be a crappy car, and/or a crappy airplane?
Long ago. Molt Taylor produced his Aerocar, approved by the government for production and operation on road and air, in 1949. Earlier efforts date back to 1937 and before. All this seems new when you don't know the history.
No rational objection to being approved for operations on both ground and air. Do you want the vehicle to be a crappy car, and/or a crappy airplane?