Source: http://www.theverge.com/2014/4/1/5553910...

Today, Zipcar — which is still headquartered in Boston — has offices in more than 26 American cities and 860,000 members across the US, Austria, Canada, Spain, and the UK. And the company’s notoriety only grew when car-rental giant Avis bought Zipcar for $491 million in January 2013. But in fact, both founders left the company more than 10 years ago, as power struggles and disputes prevented both Chase and Danielson from seeing their shared vision through. Now 56, Danielson hasn’t spoken to Chase in more than a decade.