When you’re the only country in the world that prohibits women from driving, it becomes necessary to invest in things like public transportation in order to ensure that half the adult population isn’t forced to ask for rides in order to travel long distances. Obviously a more simple solution would be to just allow women to drive, but since the leaders in Saudi Arabia are unwilling to do that, they’ve decided to make a $3.5 billion investment into Uber through the nation’s Public Investment Fund. Uber isn’t exactly a form of public transportation, but it functions in much the same way by allowing people who can’t or don’t want to drive a car to still travel by car.