Flying roadster is an exaggeration. It's more like a jumping car.

It will not be in public road but we do not know what will happen in the future. If Tesla and SpaceX are able to produce this car, what do you think about it?
They have already produced it, right? Well, made a few for demos.
The only question now is whether they'll mass-produce it and whether they can somehow convince the government to allow it on public roads. Imagine seeing a car flipping in front of you just to get past a toll booth.

It would have been epic if the door were gull-wing style (like the DeLorean DMC-12) rather than butterfly style.