Dreams are the expression of the soul. Dreaming that someone else buys a car can represent thinking and concern for their own living conditions. Dreaming that someone else buys a car may be your psychological projection, indicating that you are not satisfied with the present situation of life. Maybe you wish you had better transportation, and feel that you can handle all kinds of problems in your life more conveniently. Or they are curious and worried about the economic situation of people around them in their current lives.
Dreaming that someone else buys a car may also reflect your psychological needs, hoping to get more attention and respect. As a symbol of social status and wealth, cars can make people feel their own value and have more respect and concern. In real life, maybe you want to have a better job or a higher position to show your value.
Maybe dreaming that someone else buys a car is just an unconscious psychological activity, which may not have special significance. Dream is a reflection of one's consciousness and experience, which can be understood and explained through one's own association and operation. Therefore, you don't need to care too much about the specific content of dreams, but you can try to find your own dream interpretation, which will give you some enlightenment in your life.