They did talk a little about zoning amd density. Though without a way for people or goods to get around there is no economy.

Street car suburbs is a coined term that is basically at its heart a transit oriented community. Though street car suburbs require the expressed knowledge that density is needed.

The video simply shows that these types of communities already exist and a perfect example is that Toronto already has them.

Though many people, even the ones that live in these areas are not even aware of the distinction, but that might not necessarily be a bad thing? To them it feels like any other suburb, but has three times the density of what's legally allowed to be built with current zoning laws.