The companies' plans to give shares to hosts and drivers may be a small step but it points to a bigger economic transformation.
Airbnb for cars could change the way we get around, but traditional rental car companies want to put the brakes on these industry start-ups.
As collaborative enterprises like AirBnB, Uber and Task Rabbit grow, the companies are not just making headlines. They are also generating massive investment valuations. What's the promise, and what's the peril behind these investments in sharing?