Please, forget about this topic. Flying cars are available now and have been since the fifties. You can’t afford one. If you got it for free, you would likely walk away facing at least $40,000 in training to achieve pilot status equal to your current driving status (PPL+Inst).
Next, insurance would be way way more than the cost of an airplane and a car together due to the unusual risks posed by placing an aircraft in the street. Planes are incredibly delicate. If you get a dent somewhere, it can’t fly until it is inspected and returned to service by an FAA licenced Inspection Authority (IA). Tow trucks would not touch it for liability risks.
On top of all this, you would be getting the least capable (useful load/range) airplane and most miserable car imaginable. To say these two technologies do not blend well would be the understatement of the century.
Summary: Cars are heavy and tough as mandated by government regulations. They are driven through the wheels. Airplanes light and must be hand-built from aluminum and rivets to achieve the absolutely required lightweight for flight and are driven through thrust by a propeller or jet engine. Try throwing all these things into the same vehicle on the street, and you get something that will barely fly; has the capacity of a baby carriage the range of a wheelchair and will be passed by the highway traffic in the turtle lane.
Please get out of the sandbox now and obsess about some other fantastic concept. M8H