I'm not saying it's not cool. Parlor tricks can be very cool, and this one is. But it's still a parlor trick because it's not good for anything other than being cool. When people think of flying cars what they generally have in mind is not a car that can do a flip, it's car that can take them somewhere without needing a road so that it doesn't get stuck in traffic. This car can't do that. All it can do is backflips in a parking lot. That's not nothing, but the novelty will wear off very quickly.
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