Walmart's annual shareholders meeting is underway in Arkansas. Cheddar's Nora Ali is there reporting live on what new developments we can expect from the world's largest retailer. Uber CEO Dara Khosrowshahi says the company is on track to go public in 2019. He's confident the ridesharing giant's financials are strong and expects an IPO in the second half of next year. The Uber CEO also revealed his company is in talks with Google's self-driving car wing Waymo for a possible partnership.