I am curious about using a uber/lyft driver from the airport. With a car service they can make a grocery stop as part of the service. My understanding is that uber drivers are only paid while the car is in motion. I read a suggestion to tell the driver to circle the parking lot while you shop so they can be paid while waiting for you. Is this an appropriate thing to ask? Would it be better to just call a new driver when you are done shopping? Having never used uber I don't know the unwritten rules. I want to be respectful of the Uber/lyft driver's time, and make sure I don't cause them to lose money.