Even if we would accept the premise that flying cars will be the norm at some point, I'm not sure what people imagine that would do for them. Technically you could solve traffic jams to some degree, but still not entirely because I can't imagine that at any point flying cars would mean that you just fly wherever you want. It would give us multilayered traffic, which is cool to reduce traffic jams, but does it really do anything else?
But prior to any of that, I'm fascinated by how irrational it is to think that this jumping car is even remotely feasible to participate in any kind of traffic.
That's why I assume that the general public expects that Tesla has already solved all these problems, as they otherwise wouldn't announce such a product.
In reality, we apparently have entered times where they could present a teleporting machine and start a 200k USD pre-order with little to no public scrutiny.
You can clearly see what it does. If nobody buys it or it can't be driven on public roads, so what.