This is not a drill: Uber finally files to go public

Finally, after years of IPO chatter and expanding into food delivery, bikes, and self-driving cars, Uber has filed to go public. 
Uber was created in San Francisco back in 2009 as a vehicle-for-hire app and became the quintessential "gig economy" company with an independently contracted workforce providing rides. After Thursday's filing, the company is expected to start publicly trading in May.
Uber's smaller competitor Lyft went public as the first ride-hailing app with a $24 billion valua