Too Long; Didn't Read
Ride sharing applications like <a href="https://uber.com" target="_blank">Uber</a> and <a href="https://lyft.com" target="_blank">Lyft</a> let passengers request a ride from drivers in their area. When a passenger requests a ride, the application finds a driver as quickly as possible. If the passenger closes the app while they wait, they need a way to be notified that a car is on its way and again once it’s arrived.