https://www.reuters.com/article/us-uber-ipo-ubereats/uber-filing-lists-revenue-gains-struggles-of-food-business-idUSKCN1RO0C0 >Uber Technologies Inc's restaurant delivery business has grown revenue to $1.5 billion in just three years, the company disclosed in its IPO filing on Thursday, dwarfing the revenue of its profitable, and already public, rival Grubhub Inc.