CEO and President, Enterprise Holdings, 56
Enterprise’s revenue in fiscal 2016 topped $20 billion, cementing its status as the world’s largest rental-car company. Helping drive that growth is Nicholson’s push into markets like New Zealand, Ecuador, and the Gulf region, where it launched new franchises over the past year. The owner of National Car Rental and Alamo Rent A Car brands expanded its airport rental business. It has continued building out its car sales division (with double-digit growth last year), as well as its fast-growing car-sharing businesses. Uber, watch out.