One of Uber's freshest offerings aims to deliver fruits and vegetables to users at a discount — and reinvigorate the grocery wars with rivals like Amazon. On Thursday, Uber said it would release a "Fresh Days" feature that lets some users find discounts of up to 50% on fresh produce, meat, and dairy items. The weekly offer will have its own banner in the Uber Eats app, the company said.The move is Uber's latest effort to dominate in grocery delivery. It's a crowded field with competition from companies lik ...