The cheapest housing in a lot of places is low-rise apartments because they're still cheap to build, and use land very efficiently. But they're illegal in huge

The cheapest housing in a lot of places is low-rise apartments because they're still cheap to build, and use land very efficiently. But they're illegal in huge swathes of most cities in the US. Having better transit systems would help a lot in the US, and frankly is pretty necessary in a lot of places. You just can't squeeze that many cars around. Transit is vastly more efficient in terms of the amount of people it can carry.