And San Francisco. <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Trolleybuses_in_San_Francisco" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Trolleybuses_in_San_Francisco</a> says there are 5 such systems in the US, and that SF&#x27;s is the second largest in the Western Hemisphere, after Mexico City&#x27;s.