I am surprised by other commenters are well.
What shocks me the most is that how people here just accept the despicable state of their surroundings and just go on with their lives. I know of folks that own Audis and Mercs, but live next to a dumping yard. Now what is the point of having all that money, when you get see/smell only filth most of your life.
I had visited Delhi for the first time around twenty years ago, and it seems that despite of all the measures like CNG driven public transport and Metro, the situation has only gotten worse.
Unfortunately the political will here is too weak to effect a disruption to the current state.
The point is that one gets to compare it against the general population and thereby satisfy one's own ego. Generally, cars are a nice instrument for showing off wealth: they are highly visible.
Homes are another excellent example.
You highlight very well the absurdity of valuing such monetary wealth in a context where it makes little sense.