But I do admire you unbridled racism. Please, do tell us more.
As for the only thing that are relevant to the discussion... "buildings/housing rebuilt with wide roads" - yeah... about that.
41% of PM2.5 air pollution in Delhi is from cars, 21.5% from dust/fire and 18% from industries.
I.e. That construction and roads you are calling for is where the air pollution is coming from.
They went from 2.5 million cars in 2000 to 10.5 million in 2018. Also, Delhi already has the highest road density in India (2103 km/100 km2).
But why stop there... Let's hear more about how your puny little racist skull is empty of facts and full of shit.
You want THE ENTIRE INDIA (not just Delhi we're talking about here) to be more like Singapore.
India should fucking learn from places like Singapore which has a much higher population density
You may not know this but... for one Singapore is an island state. Kinda like Hawaii, but closer to the shore.
It's population is about 6 million, with the density of about 7804/km2.
Delhi, alone, is an inland, urban agglomeration of several cities, it's urban population alone being about 16.3 million (back in 2011) with population density of 11312/km2.
Metro area is about 28.5 million (2018) - second only to Tokyo.
India on the other hand is the seventh largest country by territory, on this planet, and BIGGEST by population with over 1.4 billion humans.
But wait, there is more... Besides Singapore being a tiny island - they have basically banned cars for everyone but the insanely rich and taxi companies.
For one, you are basically not allowed to own a car older than 10 years. They do that by limiting the total number of cars in Singapore.
You want a car - either get rid of the one you already have OR wait for someone else to do so and then OUTBID THEM for the "certificate of entitlement".
Which will allow you to register the car - at 100% to 240% of car's Open Market Value.
On top of that - cars there cost about FIVE TIMES what they do in the US.
Now, while I am all for reducing the number of cars... I do not think such practices would work elsewhere, not just in India.
After all, in most other places government can't administer beating people as punishment or ban them from protesting - like they do in Singapore.
Hell, you need a police permit for a family lunch - any public gathering of five or more people is illegal in Singapore without a police permit.
Remember - that's the country where chewing gum is illegal.