[Tiktaalik]

> once you get far enough away from the big cities

This is the key statement.

Build more SFH suburbs, gonna take you longer and longer to get far away from those cities.

[tomc1985]

Yes, but it really isn't that far. As soon as you leave the edge of suburba-mega-town you're in wilderness again. Where I live it's much less than a half-hour of driving, from the most interior parts of the city, in most conditions.