It was a quick and easy process. If you can walk in and tell them you want to be a taxi driver, they will just ask a few quick questions to get you in. It wasn't a standard interview. If you are willing to jump through their hoops to become a driver, you are on board.
I applied in-person. The process took 4 days. I interviewed at Metro Taxi (Denver, CO) in Mar 2017
Interview
Submit required documents and records needed in order to drive, per Colorado PUC regulations. Not much of an interview process. If you can drive, welcome to Metro Taxi. Go through orientation and jump through a few more hoops before you are allowed to drive.