wouldnt he have to give a specific point on the map or exact address to get an uber? he would also have to give a destination, if he completed the process that is. they should also know why the ride never happened, did he cancel? did the driver go to the location and was not able to find him?.
i suppose it all depends on what they are basing the location on - if it is based on which cell tower his phone used when calling for the uber then it would be the general area, if it was the actual information from his uber request it would be very specific..