It requires a lot of space. Everybody who can afford it must have one. It carries its energy source along with it. It pollutes the surroundings. It has to be driven by people.
Rich folks have more than one car in the family.
It is only used a small percentage of the time. It is expensive in purchase and maintenance. Because of the fast pace of world-wide urbanization, the population in the metropolitan areas will double in the next 30 to 40 years . That comes to 10 persons per vehicle. More than 500 million of these vehicles are ordinary motor cars, that each can seat at least 5 persons.