Uber customers with iOS devices will be able to share rides with other UberX riders in New York City starting this week, with Android users joining UberPOOL on Dec. 8, per the company's blog. “On any given day, the vast majority of UberX trips in NYC have a ‘lookalike’ trip — a trip that starts near, ends near, and is happening around the same time as another trip,” the post explains. “Most of these trips transport 1-2 people, leaving 2-3 empty seats." Uber has tested UberPool in Paris and San Francisco.