go to a car show, you will see more human emotion put into a peice of metal than any other type of hobby
go to a good guys car show, everybody is unique, you have old rich guys, young wanabees, 50's rocka billy, low rider, the othe rthing would be to ask each of them what they do for a living, i have met people ther that look like a death row prisoner, ask them hey what do you do for a living, doctor, school teacher, micro bioligyst, all kids, i u/s what you mean, the guy next to you at the light could be a mass murderer, future president, owner of microsoft, cars are like clothes today.
Well companies would go bankrupt trying to make customized car for each person.
Uniqueness is not only expressed visually. Sometimes it is expressed in the car we drive, the clothes we wear but it also can be expressed by the manner we speak, react think. Some choose to display their uniqueness, some choose to hide it some do not bother either way.
Well, we do not need to see. We know for a fact that people are unique. It can be empirically tested.