Ride-sharing platforms Lyft and Uber are speeding toward initial public offerings this year. Both companies offer rides and increasingly bike and scooter rentals, but there are some big differences. Uber has all kinds of other spinoffs, like Uber Eats, a freight business and international expansion. CEO Dara Khosrowshahi has described it as "the Amazon of transportation." And Lyft is still focused on rides. Jack Stewart, the new transportation reporter at Marketplace, visited Uber this week and said one thing that struck him is that Uber knows a lot about us. Today's show is sponsored by Topo Athletic and Brother Printers.