It can be confusing, but Maplebear Inc. NASDAQ: CART is better known as Instacart, the world's largest online grocery marketplace, and they also deliver groceries from over 85,000 stores to over 25 million people. However, unlike other delivery services like Uber Eats, owned by Uber Technologies Inc. NYSE: UBER) and the world's largest restaurant delivery service, DoorDash Inc. NASDAQ: DASH and Amazon.com Inc. NASDAQ: AMZN; Instacart is making inroads into in-store shopping, not just delivery. Its rollout o ...