This doesn't solve the parking problem. Sure, you get to work a bit faster but now you need to put that thing down. In a downtown area where there's a major price premium for parking. Getting to work in 10 minutes instead of 30 is going to be attractive and that'll raise parking demand, but there's only going to be so much parking available. Tearing down profitable office buildings to make flying car parking lots will be cost prohibitive and I doubt Joe Officeworker is interested in a $500+ a month flying car space.
Its also worth mentioning that none of these proposed designs are vtol, so you'll need a real runway to land or take off.
Worse, how do you leave the massive underground parking lot? Drive to the street then somewhere you can safely lift off? Now you have to wait to taxi to the proper runway or lift off zone or whatever these things will ultimately be allowed to use. Double worse, now we're less invested in solutions that actually work and don't require massive parking spaces like public trans via light rail, e-bikes, traditional bikes, etc.
There's a reason why the personal plane never took off. I'm pretty bearish about the flying car concept, even if all the technical and regulatory issues are easily solved (hint: they wont be) there's still pricing and safety issues on top of the parking problem. Oh and 9/11 is fresh in everyone's minds. Can you imagine anyone approving these things flying near the skyscrapers we work in? I suspect that if that these things catch on, they'll be like the Concorde. A toy for rich people in a hurry but with so many strict regulations and limitations that it'll ultimately be infeasible in the long run.
If Page and Google have shown anything, they're poor futurists outside of the information realm. When it comes to hardware, they're batting very poorly. They let Valve and Oculus take the VR crown, they let Musk take space tourism and electric cars, they let Jobs take the first mass market smartphone, let Amazon take the e-book crown, etc.