&gt; applying technology to building denser housing [...]<p>The technology for this isn&#x27;t anything new, the first underground carparks opened in 1930s [0][1]. It&#x27;s not so much a technology problem as it is a people problem. People (NIMBYs, the middle classes) don&#x27;t want massive blocks of housing in the middle of their cities, and what is being built &#x27;affordably&#x27; is tiny and&#x2F;or poor quality (in the UK at least). [2]<p>[0] <a href="http:&#x2F;&#x2F;www.1066online.co.uk&#x2F;hastings-history&#x2F;hastings-town&#x2F;carlisle-parade-underground-car-park.html" rel="nofollow">http:&#x2F;&#x2F;www.1066online.co.uk&#x2F;hastings-history&#x2F;hastings-town&#x2F;c...</a><p>[1] <a href="http:&#x2F;&#x2F;www.nailhed.com&#x2F;2015&#x2F;05&#x2F;the-worlds-first-underground-parking.html" rel="nofollow">http:&#x2F;&#x2F;www.nailhed.com&#x2F;2015&#x2F;05&#x2F;the-worlds-first-underground-...</a><p>[2] <a href="http:&#x2F;&#x2F;www.propertywire.com&#x2F;news&#x2F;europe&#x2F;new-homes-uk-poll-2015061810646.html" rel="nofollow">http:&#x2F;&#x2F;www.propertywire.com&#x2F;news&#x2F;europe&#x2F;new-homes-uk-poll-20...</a>