Uber has already surpassed Xiaomi to become the world’s most valuable startup, but now it looks like the company is taking things even further by raising an additional $1 billion in funding, which would value it at somewhere around $70 billion. This isn’t the first time the company has looked to raise such a mind-boggling amount of money, and considering how CEO Travis Kalanick has made it clear that he doesn’t want to make the company public anytime soon, this most certainly won’t be the last time.