Cars are here to stay. In fact we're going to have even more of them. The standard family house should have a 3-car garage, not a 2-car garage. Cars will be hybrid, with electric motors per wheel instead of drive trains. Each wheel can turn 360 degrees. The car knows how to parallel park itself: go parallel to the spot, turn wheels 90 degrees, and go in. They can park in the garage themselves with nobody inside them. If you currently have a 2-car, 18'x18' garage and 5.5'x15' cars, then you can get out of the car at the front of the garage, let the car park itself, and thereby fit 3 cars in your current 2 car garage. Similarly, today's parking lots will hold more cars in the future. I don't know how roads will cope, though.
Another thing cars will have in the future is video cameras. Several of them, mounted on the roof and bumpers and inside the car. Any accident will be captured on video from several relevant angles. So will any checkups by the police, all dings, all people leaning against your car, and if you want even what has happened in your back seat over the past week. Tiny inexpensive video cameras with cheap memory guarantee this.