Nicholson runs the largest car rental company in the world with a global fleet of 2 million vehicles—more than twice that of her next largest competitor. Despite consumers’ growing use of car ...

As the CEO of Enterprise Holdings, whose Enterprise, National, and Alamo brands make up almost half of America’s rental-car market, Nicholson is the travel industry’s top woman. A 34-year ...

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 ...