I'm a new Uber driver. Sunday afternoon I drove a couple to downtown Dallas. I clicked offline for a few minutes to find a bathroom. When I tried to go back online it would kick me offline immediately. I clicked it several times but couldn't stay online. It said something like needing to update my car. My car was selected correctly, but it showed to other options like "add a rental" and/or "add a new car". I finally drove out of downtown (out of the shaded area - which I assume means high income potential) until I clicked the GO online button and I stayed online. Anyone know why?