The world we live in is the choice of the majority.

The majority demand convenience and are willing to sacrifice almost anything to get it. Additionally, we are forced to go places like work, school, etc and with few other means to accomplish this, you get a glut of roads and cars. A lack of transportation options is a choice--usually one by those who profit from the current system. Unless their greed is sated in another way, they will work tirelessly to defend their presumed entitlements. Either that or such greed must be extinguished by societal controls and the priority has to shift to service of the greater good and the will of the people.

The root of the issue must be addressed if anything is expected to change. Cars are a symptom of the problem, not the cause. Greed and sloth are the causes.