For the first time, Uber passed car rentals as business travelers’ top mode of choice for getting around town, according to a new report. Expense management company Certify analyzed more than 30 million transactions in 2015 and found that in the fourth quarter, 41% of rides taken by corporate trekkers nationwide were with Uber. That was in comparison with 39% of rides taken in rental cars and 20% of rides in taxis during that three-month period.…