A critical insight. Look at the great Victorian suburbs around London, built along the railroads. These suburbs did not empty out central London, quite the contrary. And the rail connections resulted in dense walkable towns along the railroad lines, with often no car required at either end (in the nearer, denser suburbs).
Even today, people judge the price of homes in greater London by adding together the annual cost of rent or mortgage PLUS the cost of a railroad annual commuter pass into the London central zone.
> Typical urban street layouts generally follow five very distinctive patterns, they are as follows. The Gridiron pattern which dates back to the 1900's. The Fragmented Parallel dating back to the 1950's. Warped Parallel which is from the 1960's era. Loops and Lollipops which was a popular street style in the 1970's. Lollipops on a Stick, this style originated in the 1980's.
Anyway you cut it it is cheaper to transport a single human than to transport a human traveling with a 2 ton metal shell around him.
Highways, on the other hand, are a public bad (I think that's the technical term...) - i.e. they produce net negative externalities that must be borne by society as a whole.
Transit oriented suburbs are structured much differently from highway oriented suburbs.
There is a strong economic premium attached to proximity to the transit station - the closer you are to the station, the higher the premium. As a result, transit oriented development tends to produce dense nodes along the transit corridor. This leads to walkable, mixed-use neighbourhoods that enjoy economies of scale, density and association and can become economic engines in their own right.
On the other hand, proximity to a highway is an economic drain - the closer you are to the highway, the bigger the economic hit. As a result, highway oriented development results in sparse, low-density land use that generally separates uses and requires car ownership to perform any errand.