I can easily see then offering an opt-in protocol for their clients allowing users&#x2F;travellers from one system to book rides in another system&#x2F;city. Bingo!<p>Direct link: <a href="http:&#x2F;&#x2F;taxistartup.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;taxistartup.com&#x2F;</a>