Scenario 1 (buy Lyft): So if Lyft has around 1 million drivers in USA [1], and Apple will pay them an average of $50/month to use the device + the cost of the device/installation (around $100) that would cost around $150,000,000 on top of the acquisition price. And you cant really be sure that they covered all roads.
Scenario 2 (hire drivers): US total road length is about 4 million miles, average driver can cover about 160 miles a day (8 hours * 20Mph). If you want to drive through all of the US in 30 days you would need around 800 drivers. If you pay them $5000/month to do that, that would cost you "just" $4 million.
[1] https://investor.lyft.com/news-releases/news-release-details...