There is finally some evidence to validate the hypothesis that networked-transportation solutions such as Uber are a threat to car-rental companies. The percentage of North American business travelers that listed Uber and Lyft on their expense reports exceeded the percentage those who listed car rentals for the first time, Bloomberg reported. The accounting software firm Certify reported that 40% of professionals listed car rentals as an expense and 43% listed ride-hailing apps as an expense during fourth quarter 2015.