What age would you consider it ok to let your kid take an Uber alone?

My son is 12. Logistics of activities tomorrow make getting him to a location a bit stressed. It can be done but I'm halfway considering just getting him an Uber. He's a good kid with a cell phone. I'm on the fence on it. Any parents use uber for their younger kids? via /r/Parenting https://ift.tt/2tvzQui