For the people who are confused (I was) between uberPOOL, uberHOP and uberCOMMUTE:<p>uberPOOL most will know matches a rider real-time with another one heading in the same direction. The riders split the cost between them.<p>uberHOP is like a bus service -  uses designated pickup locations and matches people going on similar routes. It costs riders a flat fee of $5 for each ride. 
Difference between uberHOP &amp; uberPOOL - uberPOOL does not require riders to walk to pre-determined locations, instead having drivers pick up passengers at their exact location. The cost is variable and not a flat fee. For uberHOP riders have to walk to a predetermined spot (something like a bus stop).<p>uberCOMMUTE is less formal than the other two carpooling options and is designed for everyday people (ex. an office goer) that want to share space in their car. In other words, one temporarily becomes an uber driver when they are driving to their office. On their way to office a person can pickup passengers and gets compensated for that.
For passengers, it’s Uber as usual.  They simply input their destination and then uber matches them with a driver going the same way.