Ingredients: One flying car, capable of moving 4 x 100 kg (passengers and baggage). One self-piloting feature, allowing (or mandating) autonomous movement to

Ingredients: One flying car, capable of moving 4 x 100 kg (passengers and baggage). One self-piloting feature, allowing (or mandating) autonomous movement to the destination. One timing device and detonator. 400Kg of whatever kind of explosives you can get. Behold: Uber's cruise missile. Come to think of it, you can probably load up a lot more payload for less money in a ground vehicle.