We don't have flying cars. We aren't close to having flying cars.
Actually, the Airbus effort is a small, car-like VTOL vehicle intended for short flights of perhaps 50 miles or less. A single passenger prototype has already flown a test flight. It might be 10 years or a bit more before it is commercially available (I've seen 2022 quoted, but that seems more hopeful that practical), but based on the comments here, that's much sooner than many people believe. Others are also in the testing phases with similar style vehicles.
Price. A small helicopter capable of carrying a couple passengers around can run $100/hr-$300/hr
Probably too soon to tell with any real accuracy what the operating costs will be for something like the Airbus Vahana, but I believe they are projecting an operating cost of a little over $1 per km. So, perhaps 25% more than an Uber ride of a similar distance.
Definitely something that must be addressed, though it does not seem to me to be an insurmountable problem. Obviously, the maintenance schedules and safety checks will be more like the current ones for planes than what is typical for cars, even though we may call them "flying cars". There are already safety regulations for aircraft of various sizes for operating over populated areas. This may not be exactly the same, but it's not entirely dissimilar either.
No doubt another valid concern, but all of the small, autonomous vehicles (from Boeing, Airbus, AirSpaceX, others) being touted as the future "air taxis" are electric, and some are VTOL planes rather than helicopters, both of which should help alleviate the noise issues.
Again, probably a lot closer than most people think.