I'll dig deeper into your UI in a minute, but have a usage scenario for you to consider. Suppose this thing catches on in the Las Vegas tourists context I ment

I'll dig deeper into your UI in a minute, but have a usage scenario for you to consider. Suppose this thing catches on in the Las Vegas tourists context I mentioned earlier. There might be multiple people queuing up with the same origin and destination. How do you identify your rideshare partners? Second question: Suppose there are people who have heard of this now-ubiquitous app but gasp don't have a smartphone with them. Can they jump in and share a ride? For both situations I think it might be good to have a big distinctive screen-covering photo of the place you're going (if the destinations are among a top list), or the destination spelled out in text with distinctive foreground/background pairs. I'm thinking of this as akin to buying theatre tickets in front of the venue just before a show. Then the prospective partners who have phones can stand around with their smartphone screens not-so-subtly visible, and other prospectives (having smartphones or not) can scan them visually very quickly instead of asking a bunch of people "are you my ride"?