Worked out well despite rough edges
The service claims to have two models: having the same point of origin and destination, or from point A to point B, which requires two drivers. In fact the app does not give one the ability to choose, so I just put in the worst case round trip time and it gave me the cost estimate for that entire time.
I did not know when I would hear from the driver when I signed up, but I heard from her very shortly afterwards and we worked out the details by phone. The plan was for me to send her back to the point of origin via Uber using my account.
That all worked fine, but she got there about 2.5 hours sooner than my total round trip worst case estimate of 7 hours. The service does not correct for what the actual duration was, so it would have been better to lowball it and then Venmo the driver the difference. It would be even better for the company to improve the app. Until then, it would be easy and desirable for the company to more clearly explain how it all works (or doesn’t yet work).
They should also think about creating a third model for drivers to do exactly what I did (send the driver back via Uber/Lyft), which would be cheaper and logistically simpler than sending a second driver and another car the whole way to shadow us.
It was a godsend to have 2 1/2 hours of time to work while she was driving.