If &quot;horse&quot; is a stand-in for non-human-powered transportation, then many people in the developed world don&#x27;t have one. Plenty of cities (outside of stereotypical US suburbia) are perfectly livable only owning a bicycle because of their density, decent public transportation for when you have guests, and car sharing.<p>That speaker was right: don&#x27;t underestimate the impact of bicycles.